Question

Simplify.
x^2-16/x^2-6x+9/x^2-3x-4/x^2-2x-3

Answer 1

@Hero

Answer 2

is there any paranthesis?

Answer 3

One sec

Answer 4

I interpret it as this:
\[\frac{x^2 - 16}{x^2 - 6x + 9} \div \frac{x^2 - 3x - 4}{x^2 - 2x -3}\]

Answer 5

You are right

Answer 6

i think it';; be easier if u factor out everything first

Answer 7

Which in that case, you can simply flip the second fraction change it to multiplication:

\[\frac{x^2 - 16}{x^2 - 6x + 9} \times \frac{x^2 - 2x -3}{x^2 - 3x - 4}\]

Answer 8

Next, you can factor each expression and then cancel factors of one to simplify.

Answer 9

I don't get how to factor out the trinomials

Answer 10

do u know the box and diamond method?

Answer 11

no

Answer 12

I know that you are suppose to multiply the first one and second one then find one that adds up to the middle one

Answer 13

yea, its like that
u see how the trinomials are written in the form Ax^2 + Bx +C

and inthe pic, the top # is A times C and the bottom is just B
ur tryin to find 2 factors of AC that add up to B

we can try factorring x^2 -2x -3

Answer 14

so what # times another equals -3 and adds to -2