Question

Calculați: a) (x + 2)(x² - x + 3) - (x + 1)(x² + 2x - 5).

Answer 1

x+2
$x^{2}$ - x+3
x=1
x^{2}+2x-5

1)x^{2}+2x-5= -3x^{2}
2)x+2-x+3= -1x
3)x^{2}-x+3= -2x

-3x^{2}+-1x=-2x=-5x^{2}

Rs: -5x^{2}

Sper cai drept  si team ajutat