SOLUTION: I cannot figure this out. Divide. x^2+2x-15/4x^2 divided by x^2-25/2x-10 I am coming up with x plus or minus three over 2x^2 or 2x^2 over x plus or minus three, depending

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I cannot figure this out. Divide. x^2+2x-15/4x^2 divided by x^2-25/2x-10 I am coming up with x plus or minus three over 2x^2 or 2x^2 over x plus or minus three, depending       Log On


   

Question 38588: I cannot figure this out.
Divide.
x^2+2x-15/4x^2 divided by x^2-25/2x-10
I am coming up with x plus or minus three over 2x^2 or 2x^2 over x plus or minus three, depending on how I'm figuring and I don't know which is right.
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
+%28x%5E2%2B2x-15+%29%2F%284x%5E2%29+ divided by %28x%5E2-25%29%2F%282x-10%29+

Since this is a division problem, you need to factor everything possible, and invert the second fraction and multiply. Now it should look like this:
%28%28x%2B5%29%2A%28x-3%29%29%2F%284x%5E2%29+ TIMES +%282%28x-5%29%29%2F%28%28x-5%29%2A%28x%2B5%29+%29+

Divide out the factors of (x+5), (x-5), and 2, and what is left will be
+%28+x-3%29%2F%282x%5E2%29+

R^2 at SCC