Question

Se M = (x – 1)(x + 2) e N = (x + 1)(x + 3), determine o valor de M + N. * x² + 5x + 1 2x² + 5x + 1 2x² – 5x - 1 x² – 5x – 1 x² + 5x - 1 preciso rapido

Answer 1

Resposta:

$2x^{2} + 5x + 1$

Explicação passo-a-passo:

$M = (x - 1) \times (x+2)\\N = (x + 1) \times (x + 3)$

$M = (x - 1)\times (x + 2)\\M = x^{2} + 2x - x - 2\\M = x^{2} + x - 2$

$N = (x + 1) \times (x + 3) \\N = x^{2} + 3x + x + 3\\N = x^{2} + 4x + 3$

$M + N = x^{2} + x - 2 + x^{2} + 4x + 3\\M + N = 2x^{2} + 5x + 1$

Bons estudos!

Bom dia, espero ter te ajudado!! =)