Question

Sendo A = 2/x+2 e B = 2x/x² - 4

Calcule A + B

Answer 1

sendo:

A = 2/(x + 2) = 2*(x - 2)/(x² - 4)

B = 2x/(x² - 4)

A + B = (2x - 4  + 2x)/(x² - 4)

A + B = (4x - 4)/(x² - 4)