Question

Simplify 5x-10/x^2-4

Answer 1

Let's factorise and use the difference of two squares (D.O.T.S):
$\frac{5(x-2)}{(x+2)(x-2)}$
the (x-2) in the numerator and denominator cancel out so we are left with:
$\frac{5}{x+2}$
So the answer is B