Question

Bring the fraction a/a-4 to a denominator of 16-a^2

Answer 1

Answer:

a / (a - 4) = a(a + 4) / ((a - 4)(a + 4)) = (a^2 + 4a) / (a^2 - 16) = -(a^2 + 4a) / (16 - a^2)