(x+3)/(x+8)-(x-8)/(x-3) I worked this out and got -55 Ans. But was marked wrong because the Ans. is 55 why and how does this end with no minus(-)sign please show working

Answer 1

(x+3)/(x+8)-(x-8)/(x-3)
=[(x+3)(x-3) - (x-8)(x+8)]/[(x+8)(x-3)]
=[(x^2-9)-(x^2-64)]/[(x+8)(x-3)]
= (-9+64)/[(x+8)(x-3)]
= 55/[(x+8)(x-3)]

You probably forgot to use parentheses to keep track of quantities. But aside from that, what did you do with your denominator?

Answer 2

hey i know the answer now i wrote left to right instead of right to left and botched
the answer