Question

Calcule raíz quadrada de (2x+3)²-9=12x

Answer 1

(2x + 3)^2 - 9 = 12x

[(2x)^2 + 2(2x)(3) + (3)^2] - 9 = 12x

[ 4x^2 + 4x(3) + 9 ] - 9 = 12x

4x^2 + 12x + 9 - 9 - 12x =0

4x^2 + 12x - 12x + 9 - 9 = 0

4x^2 - 0x + 0 = 0

4x^2 = 0

x^2 = 0/4

x^2 = 0

X = \|0

X = 0