Question

Se a=(x+1)^2+(x+1)(x-1) e b= -2x(x+1)
Calcule a + b

Answer 1

Olá Manuella

a = (x + 1)² + (x + 1)*(x - 1)

a = x² + 2x + 1 + x² - 1 = 2x² + 2x

b = -2x*(x + 1) = -2x² - 2x

a + b = 2x² + 2x - 2x² - 2x = 0

.