Simplify x^2+2x-8/x^3-16x

Question

Mathematics

Charlie Benjamin

7 January, 17:31

Simplify x^2+2x-8/x^3-16x

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Answers (2)

Know the Answer?

Adison Richards · Answer 1

X^2 + 2x - 8 = x^2 + 4x - 2x - 8 = x (x + 4) - 2 (x + 4) = (x + 4) (x - 2);

x^3 - 16x = x (x^2 - 4^2) = x (x + 4) (x - 4);

the fraction is reduced from (x + 4) (x - 2) / x (x + 4) (x - 4) to (x - 2) / x (x - 4)

Luna Arias · Answer 2

X^2 + 2x - 8 = (x + 4) (x - 2)

x^3 - 16x = x (x^2 - 16) = x (x + 4) (x - 4)

Therefore: (x - 2) / x (x - 4)