Math Is Fun Forum

Ok that... looks complicated... Is it computation problem? (For my post)

Haven't worked on yet bobby! After all, school is my main priority

For (1) I think I have it:

And whatever that equals. I am mentally getting about

Define "How did I do on the last part?"

What last part?

That would work, but I am forced to use the substitution method that I said on the last post, so... "yay" me!

Alright well, better start working...

Ah..

Looking online revealed this method for question 2:

let s and t be solutions to the quadratic

s+t=1/2 and st=-4

Replacing s+t with -b/a and st with c/a gives:

-b/a=1/2 and c/a=-4
Plugging in a=2 gives b and c, which you plug into the original equation

Need help (now) with a little bit of Quadratic stuff. And please show work! Need to understand how you guys solved it!

(1) If both -3 and

are solutions to the equation

, where a, b and c are integers, what is a possible value of 2a+b-c?

(2) Given an equation

, if the sum of two solutions to this equation is

and the product of the two solutions is -4;

(a) What are the values of b and c

(b) What are the solutions to this equation?

(3) Use the Synthetic Division Theorem to do each of the following dividion.

(a)

I'm pretty sure that Confucius actually did say that saying

Oh well... yes and I see that there is another post about this problem too...

Do you guys here know any mental math tricks? Like how to multiply any number by 11 mentally, 12, 5, etc..

I know the 11 trick and the squaring any number ending in 5 trick. But that's about it

Yeah, I understand why there are an

solutions here. After playing around with it, I have one:

Although is there a solid method to get such equation?

Ok so now, I just need help simplifying

EDIT: Noticed a mistake

I have a question about another alternative method I just thought up of:

Let the midpoint of BC be called M and let BC=a

and

. So by Pythagorean Theorem, we have

Note: Refer to Bob's diagram above