Question

SIMPLIFYING RATIONAL EXPRESSIONS HELP??

Answer 1

use the fact that a/b/c/d = a/b divided by c/d to solve

Answer 2

to simplify*. x^2-1/x^2-9 divided by x^2+3x-4/x^2+8x+15

Answer 3

\[\frac{ x^{2}-1 }{ x^{2}-9 } \div \frac{ x ^{2}+3x-4 }{ x ^{2}+8x+15 }\]
Is that the problem?

Answer 4

please use these identities:
\[\begin{gathered}
{x^2} - 1 = \left( {x - 1} \right)\left( {x + 1} \right) \hfill \\
{x^2} - 9 = \left( {x - 3} \right)\left( {x + 3} \right) \hfill \\
{x^2} + 3x - 4 = \left( {x - 1} \right)\left( {x + 4} \right) \hfill \\
{x^2} + 8x + 15 = \left( {x + 3} \right)\left( {x + 5} \right) \hfill \\
\end{gathered} \]