Question

(x+3)(x+2)+(x+5)(x+4)-3(x+4)

Answer 1

Explicación paso a paso:

Fórmula

$( x + a)(x + b) = {x}^{2} + (a + b)x + a \times b$

Entonces:

$(x + 3)(x + 2) + (x + 5)(x + 4) - 3(x + 4) \\ ( {x}^{2} + 5x + 6) + ( {x}^{2} + 9x + 20) - 3x - 12 \\ 2 {x}^{2} + 14x + 26 - 3x - 12 \\ 2 {x}^{2} + 11x + 14$