Question

me ajudem a desenvolver

(x+2³)

(2x+5)³

(3x-2)³

Answer 1

Explicação passo-a-passo:

a)

(x + 2)³ = x³ + 3.x².2 + 3.x.2² + 2³

(x + 2)³ = x³ + 6x² + 3.x.4 + 8

(x + 2)³ = x³ + 6x² + 12x + 8

b)

(2x + 5)³ = (2x)³ + 3.(2x)².5 + 3.2x.5² + 5³

(2x + 5)³ = 8x³ + 3.4x².5 + 3.2x.25 + 125

(2x + 5)³ = 8x³ + 60x² + 150x + 125

c)

(3x - 2)³ = (3x)³ - 3.(3x)².2 + 3.3x.2² - 2³

(3x - 2)³ = 27x³ - 3.9x².2 + 3.3x.4 - 8

(3x - 2)³ = 27x³ - 54x² + 36x - 8