Question

Resolver equação (2x + 5). (X2 - 5x +4)

Answer 1

Resposta:

(2x + 5). (X2 - 5x +4) =

$2x^{2} - 7x^{2} + 6x + 5x^{2} - 10x + 20 = 0\\\\-5x + 11x^{3} - 10x = -20\\\\6x^{2} - 10x = -20\\\\-4x = -20\\\\x = \frac{-20}{-4} = \\\\x = 5$

Explicação passo-a-passo: