Question

A solucao da equacao (2×-4)(×+3)

Answer 1

(2x - 4)(x + 3)

Realizando a distributiva

2x² + 6x - 4x - 12

2x² + 2x - 12


Forte abraço!

Answer 2

( 2 x - 4 ) . (x - 3 ) = 0
2 x ^2 + 6 x - 4 x - 12 = 0
2 x ^2 + 2 x - 12 =0

x = -2 +- raiz de 2 ^2 - 4 * 2 * - 12
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2


x = - 2 +- 100 / 2
x1 = 6
x 2 = -4