Question

Desenvolva em seu caderno:
a)(x+1)³
b)(2a+3)³
c)(1-x)²
d)(3a-2)³

Answer 1

a) (x + 1)³

(x + 1)(x + 1)(x + 1)
(x² + 2)(x + 1)(x + 1)
x³ + 2x² + x + x² + 2x + 1

R = x³ + 3x² + 3x + 1


b) (2a+3)³

(2a+3)(2a+3)(2a+3)
(4a² + 12a + 9)(2a+3)
8a³ + 24a² + 18a + 12a² + 36a + 27

R = 8a³ + 36a² + 54a + 27


c) (1 - x)²

(x - 1)(x - 1)

R = x² -2x +1


d) (3a-2)³

(3a-2)(3a-2)(3a-2)

(9a² - 12a + 4)(3a-2)
27a³ - 36a² + 12a - 18a² + 24a - 8

R = 27a³ - 54a² + 36a - 8