Question

desarolle las siguientes expresiones
(x + 4) (x + 2)
(x + 3) (x - 5)
(x - 4) (x + 1)
(a + 5) (a + 4)

Answer 1

$(x + 4)(x + 2) = {x}^{2} + 6x + 8$

$(x + 3)(x - 5) = {x}^{2} - 2x -15$

$(x - 4)(x + 1) = {x}^{2} - 3x - 4$

$(a + 5)(a + 4) = {a}^{2} + 9a + 20$

Answer 2

Explicación paso a paso:

(x+4) (x+2) = x^2+2x+4x+6 = x^2+6x+6

(x+3) (x-5) = x^2-5x+3x-8 = x^2-2x-8

(x+4) (x+1) = x^2+x+4x+4 = x^2+5x+4

(a+5) (a+4) = a^2+4a+5a+9 = a^2+9a+9