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

really do appreciate this thx

-a (a+4) / (16 - a²)

Step-by-step explanation:

a / (a - 4) Multiply by (a + 4) / (a + 4)

= a (a + 4) / [ (a - 4) (a + 4) ] Multiply the denominatorator terms

= a (a + 4) / (a² - 16) Multiply by - 1 / (-1)

= - a (a+4) / (-a² + 16) Reorder terms in denominator

= - a (a+4) / (16 - a²)