multiply second fraction on the left by a+8 in both numerator and denominator

(a^2 - a - 8) / (a+8) = 64 /(a+8)

a^2 - a - 72 = 0

(a - 9) (a + 8) = 0

a = 9 or a = -8

Secure Information

Content will be erased after question is completed.

Enter the email address associated with your account, and we will email you a link to reset your password.

Forgot your password?

Sign Up