Question

Resolva essa conta
(x+3).(x+4)-2.(x+1)

Answer 1

$(x + 3) \times (x + 4) - 2 \times (x + 1)$
$x {}^{2} + 4x + 3x + 12 - 2x - 2$
$x {}^{2} + 5x + 10$

Answer 2

Resolução:

(x + 3).(x + 4) - 2(x + 1) =

x² + 4x + 3x + 12 - 2x - 2 =

x² + 4x + 3x - 2x + 12 - 2 =

x² + 7x - 2x + 10 =

→ x² + 5x + 10 ←