Question

1.Efectuar:

(x + 2)(x - 2) + (√x + 2)(2 - √x) (x + 4)

Answer 1

Respuesta:

12

Explicación paso a paso:

(x + 2)(x - 2) + (√x + 2)(2 - √x) (x + 4)

$(x^{2} - 2^{2})+ (2+\sqrt{x})(2-\sqrt{x} ) (4+x) \\(x^{2} - 4 ) + (4-x)(4+x)\\x^{2} -4 +16- x^{2} \\x^{2} -x^{2} +16 - 4\\12$