Question

x^2-9/x^2-49 divided by a+3/ a+7 i factored and got (x+3)(x-3)(a+3) all over (x+7)(x-7)(a+7) but now im stuck

Answer 1

Well, u would be since 3's and 7's don't mix and neither do a's and x's.

(By the way, the (a+7) should be on top)

Answer 2

i dont understand, i factored them out can u help me?

Answer 3

To divide by a fraction, turn it upside down and multiply by it instead.

Answer 4

so one of the 7's go on top?

Answer 5

Just do what I said.

Answer 6

i will, i'm just confused about how to fully set it up

Answer 7

I repeat, to divide by a fraction, turn the fraction upside down and multiply by it instead.

Answer 8

take what u r dividing by. whatever is on the bottom put it on top. whatever was on top put it on the bottom. now multiply that in

Answer 9

so its a+3/a+7?

Answer 10

Yes!! U multiply by that...

Answer 11

is a+3/a+7 the answer because they are in a fraction a+3 is over a+7

Answer 12

?

Answer 13

What r u talking about?

Answer 14

Look, the answer you had in your question is right except that u have the (a+3) on top and the (a+7) on the bottom when it should be the other way round.

Which it will be when you do what I said.

What's 1 divided by 1/2 (a half)? Answer 2 (2 halves make 1).

How to get 2?

Turn 172 the other way up, 2/1.

And multiply.

1*2/1 = 2.

Try it with a few simple number fractions and you will soon see how it works.

And it is the same thing for algebra.

Answer 15

\[(A / B) / (C / D) = A / B * D/C = AD/BC\]