Question

a) (x - 1)²=
b) (x + 1)²=
​

Answer 1

Explicação passo-a-passo:

a) (x - 1)² ===> (a - b)² = a² - 2ab + b²

(x)² - 2*(x)*(1) + (1)²

(x)*(x) - 2x + (1)*(1)

x² - 2x + 1

b) (x + 1)² ===> (a + b)² = a² + 2ab + b²

(x)² + 2*(x)*(1) + (1)²

(x)*(x) + 2x + (1)*(1)

x² + 2x + 1