Question

Решите уравнение. смотреть вложение.

Answer 1

$( x+1 ) ( x+1)+ (x-1) ( x+2) +x+3 = x^{2} - 1 x^{2} +2x +1 x^{2} + 2x - x [tex] -2+x +3 - x^{2} +1 =0$[/tex]
$x_{1} = frac{-4 + sqrt{ 4^{2} - 4*1*3} }{2 *1} x_{1} = -1$
$x_{2} = frac{-4 - sqrt{ 4^{2} - 4*1*3} }{2 *1}$
$x_{2} = -3$