Question

(x +1)(x -2) + x2 = 0
Doy corona xd

Answer 1

Respuesta:

$x_{1} =\frac{1+\sqrt{17} }{4}$

$x_{2}=\frac{1-\sqrt{17} }{4}$

Explicación paso a paso:

(x +1)(x -2) + x² = 0

x²-2x+x-2+x²= 0

2x²-x-2=0

*usa la formula general*

$x=\frac{-(-1)+-\sqrt{(-1)^{2} -4*2*(-2)} }{2*2}$

$x=\frac{1+-\sqrt{1+16} }{4}$

$x_{1} =\frac{1+\sqrt{17} }{4}$

$x_{2}=\frac{1-\sqrt{17} }{4}$