Question

DETERMINE:

RAIZ DE X+2 = X+2

Me ajuda ai pessoal

Answer 1

Se for √(x + 2) = x + 2

x + 2 = (x + 2)²

x + 2 = x² +4x + 4

x² +3x +2 = 0

$\Delta = \mathsf {b^2-4ac }$

9 -8 = 1

$\mathsf{x = \frac{-b \pm \sqrt{\Delta} }{2a}}$

-3 ± 1/2 → {-1 , -2}

Se for √x + 2 = x + 2

√x = x

x = x²

x² -x = 0

x(x -1) = 0 → {0 , 1}