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#126 2011-08-01 01:00:02

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

so like shes asking to solve by graphing what am i spouse topost to her the -3 , -4


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#127 2011-08-01 01:02:18

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

Hi;

Yes, those are the roots.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#128 2011-08-01 01:11:59

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

what about the quadratic equation that anonimnystefy  did isn't that what am spouse to do


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#129 2011-08-01 01:13:58

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

You want to get the equation from the roots?


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#130 2011-08-01 01:14:53

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

yeah i think thats what am spouse to do


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#131 2011-08-01 01:16:01

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

can u teach me how he did it like  by steps


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#132 2011-08-01 01:16:23

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

If the roots of a quadratic are a and b then you get the equation from:


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#133 2011-08-01 01:24:36

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

oooooh ok thanx allot i get it now


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#134 2011-08-01 01:27:36

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

You say:


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#135 2011-08-01 01:54:53

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

i have a question cant the roots also be -5, -2?


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#136 2011-08-01 01:55:54

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

Nope, not from that graph.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#137 2011-08-01 02:13:37

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,049

Re: Solving Quadratics by Factoring and Graphing

hi zee-f

when you find solution of x^2-1=0 it is the same as looking for those valus of x for which the value of y in the function y=x^2-1 is equal to 0.

the same with your problem.we have to find all values of x for which y=0.and because y=0 we have to search for intersections of your graph with the x-axis...(remember the ordered pair (x,0) is on the x-axis).


“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

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#138 2011-08-01 02:13:45

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

are the roots for this -4 -1 ?


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#139 2011-08-01 02:15:35

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

No, they are not. The graph crosses at -6 and 1. Those are the roots.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#140 2011-08-01 02:16:44

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

oooh so i have to have the zero as my x axis


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#141 2011-08-01 02:17:27

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

Yes, y must be 0. That is a crossing of the x axis. That is what a root is!


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#142 2011-08-01 02:18:37

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

ok so this is the equation i got (x^2+7x+6)


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#143 2011-08-01 02:19:41

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

That is not correct.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#144 2011-08-01 02:21:38

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

(x+6)(x+1)= (x^2+7x+6)


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#145 2011-08-01 02:21:59

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

Nope, what are the roots!


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#146 2011-08-01 02:23:43

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

-6 , -1


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#147 2011-08-01 02:25:42

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

That is not correct, the graph says -6,1


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#148 2011-08-01 02:26:18

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,049

Re: Solving Quadratics by Factoring and Graphing

hi zee-f

no not -1,but 1


“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

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#149 2011-08-01 02:29:11

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

ooh yeah sorry big headache from fasting i missed that

so it would be (x^2+5x-6)


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#150 2011-08-01 02:29:51

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,049

Re: Solving Quadratics by Factoring and Graphing

that is right


“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

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