SOLUTION: hi, i am having trouble with this equation x^2+2x-15 --------- x^2-9 --------- x^2+6x+5 -------- x^2+4x+3

Algebra ->  Systems-of-equations -> SOLUTION: hi, i am having trouble with this equation x^2+2x-15 --------- x^2-9 --------- x^2+6x+5 -------- x^2+4x+3      Log On


   

Question 57385: hi, i am having trouble with this equation
x^2+2x-15
---------
x^2-9
---------
x^2+6x+5
--------
x^2+4x+3
Answer by Cintchr(481) About Me  (Show Source):
You can put this solution on YOUR website!

There is a rule that says ...
+%28a%2Fb%29%2F%28c%2Fd%29+=+ad%2Fbc+
So re-write your expression
+%28%28x%5E2%2B2x-15%29%28x%5E2%2B4x%2B3%29%29%2F%28%28x%5E2%2B6x%2B5%29%28x%5E2-9%29%29+
Factor each polynomial

Reduce the fraction ...
+%28%28x-3%29%28%28x%2B3%29%28x%2B1%29%29%29%2F%28%28x%2B1%29%28%28x-3%29%28x%2B3%29%29%29+
+%28%28x-3%29%28x%2B3%29%29%2F%28%28x-3%29%28x%2B3%29%29+
+%28x%2B3%29%2F%28x%2B3%29+
+1%2F1+
+1+