Question

Simplifique a expressão 3 x (x - 2) + (x - 1) (x + 5)

Answer 1

Boa tarde!

$3x \times (x - 2) + (x - 1) \times (x + 5)$

$3x {}^{2} - 6x + (x - 1) \times (x + 5)$

$3x {}^{2} - 6x +x {}^{2} + 5x - x - 5$

$4x {}^{2} - 6x + 5x - x - 5$

$4x {}^{2} - 2x - 5$

Espero ter ajudado!