Math Is Fun Forum

zee-f

Member

Registered: 2011-05-12

Posts: 1,220

Re: Factoring Polynomials

thats the method u used

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

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Factoring Polynomials

I am leaning towards E. So far it can be done by grouping and perfect squares method.

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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.

zee-f

Member

Registered: 2011-05-12

Posts: 1,220

Re: Factoring Polynomials

yeah e seems right to me 2 did i do the rest correct am starting to like this lesson for so reason

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

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Factoring Polynomials

Hold on that is a lot to look at.

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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.

zee-f

Member

Registered: 2011-05-12

Posts: 1,220

Re: Factoring Polynomials

lol ok

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

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Factoring Polynomials

Hi;

18 is A, hopefully!

---

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.

zee-f

Member

Registered: 2011-05-12

Posts: 1,220

Re: Factoring Polynomials

yup

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

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Factoring Polynomials

Hi;

19 is correct as far as I know.

---

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.

zee-f

Member

Registered: 2011-05-12

Posts: 1,220

Re: Factoring Polynomials

20 is incorrect

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

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Factoring Polynomials

Hi;

For 20) how do you get a GCF out of that?

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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.

zee-f

Member

Registered: 2011-05-12

Posts: 1,220

Re: Factoring Polynomials

yeah i just revised it isn't it e ?

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

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Factoring Polynomials

Hi;

That is not correct. Did you try to factor that by the  difference of two squares. Can you see two squares there? No, you can not. The answer is F

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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.

zee-f

Member

Registered: 2011-05-12

Posts: 1,220

Re: Factoring Polynomials

i got #6 and number 19 incorrect

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

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Factoring Polynomials

19?  What did you enter for the answer?

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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.

zee-f

Member

Registered: 2011-05-12

Posts: 1,220

Re: Factoring Polynomials

19 as e

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

anonimnystefy

Real Member

From: Harlan's World

Registered: 2011-05-23

Posts: 16,049

Re: Factoring Polynomials

hi bobbym

could 19 be done by grouping?

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“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.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Factoring Polynomials

That is what I got too.

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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.

anonimnystefy

Real Member

From: Harlan's World

Registered: 2011-05-23

Posts: 16,049

Re: Factoring Polynomials

x^2-169=
x^2-13x+13x-169=
x(x-13)+13(x-13)=
(x+13)(x-13)???

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“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.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Factoring Polynomials

It does look like B is 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.

anonimnystefy

Real Member

From: Harlan's World

Registered: 2011-05-23

Posts: 16,049

Re: Factoring Polynomials

i think that if a polynomial can be factored by any other method than it can also be done by grouping.

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“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.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Factoring Polynomials

For 6) C is correct.

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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.

zee-f

Member

Registered: 2011-05-12

Posts: 1,220

Re: Factoring Polynomials

am ganna do 6 again and see what i did incorrect

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

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Factoring Polynomials

What did you get?

You should get ( x - 3 ) ( x + 5 )

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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.

zee-f

Member

Registered: 2011-05-12

Posts: 1,220

Re: Factoring Polynomials

x^2+2x-15
15*x=15x= 5 , -3
(x^2+5x)-(3x-15)
x(x+5)-3(x-5)
(x-3) (X+5)

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

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Factoring Polynomials

Correct, please do not change x to X, those are different variables and mean different things.

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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.