Question

Subtract. Simplify by removing a factor of 1 when possible.
16fb/f^2-b^2 - f-b/f+b

Answer 1

16fb/(f^2-b^2)-[(f-b)/(f+b)]
16fb/(f-b)(f+b)-[(f-b)/(f+b)]
[16fb-(f-b)(f-b)]/(f-b)(f+b)
[16fb-(f^2-2fb+b^2)]/(f-b)(f+b)
(16fb-f^2+2fb-b^2)/(f-b)(f+b)
(18fb-f^2-b^2)/(f-b)(f+b)
18fb/(f-b)(f+b)-[(f-b)(f+b)/(f-b)(f+b)]
18fb/(f-b)(f+b)-1
18fb/(f^2-b^2)-1