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Romashka [77]
3 years ago
9

Simplify the expression. (x^2 - 9)/(x^2 + 2x - 15)

Mathematics
1 answer:
tia_tia [17]3 years ago
4 0

Answer:

We have

\frac{x^2-9}{x^2+2x-15}

\frac{\left(x+3\right)\left(x-3\right)}{x^2+2x-15}

\frac{\left(x+3\right)\left(x-3\right)}{\left(x-3\right)\left(x+5\right)}

\frac{x+3}{x+5}

∴The answer is D

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We can use these formulas to find the apothem and use the pythagorean theorem to find the hypotenuse (slant height).

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