Question

Thực hiện phép tính :

a)x^2 - 4/2x : 3x-6/6

b)(a/b + b/a-2):(1/b-1/a)

Answer 1

\(a,\dfrac{x^2-4}{2x}:\dfrac{3x-6}{6}=\dfrac{\left(x-2\right)\left(x+2\right)}{2x}.\dfrac{6}{3\left(x-2\right)}=\dfrac{6\left(x-2\right)\left(x+2\right)}{6x\left(x-2\right)}=\dfrac{x+2}{x}\)