Question

simplify (x^2-16)/(4-x)

Answer 1

(x+4)(x-4)/-(x+4)
x-4/-1

Answer 2

= (x-4)(x+4)/(4-x)
= (x-4)(x+4)/-(x-4)
= -(x+4)
= -x-4

Answer 3

wait is the negative sing allowed to be on the top/ cause i think it should stay at the denominator