Question

−x 2⋅( x 2− x )⋅( x 2+5 x+6)≥ 0

Answer 1

−x 2⋅( x 2− x )⋅( x 2+5 x+6)≥ 0

x=-x 2 . (2 - x) . (x7  x+6) ≥ 0

x = -x2 . (2- .  x7 x + 6) ≥ 0

x= - x 2 . ( 2 - . 7 x+6) ≥ 0

x= -x2 . (2- . 7+ 6)  ≥ 0

x= -2 . (2 - . 7 + 6)  ≥ 0

-2 . (14 - + 6) ≥ 0

-2 . -20  ≥ 0

+40 ≥ 0

$40\ge \:0\quad :\quad \begin{bmatrix}\mathrm{Solucao:}\:&\:\mathrm{Verdadeiro\:para\:todo\:}y_{789}\:\\ \:\mathrm{Notacao\:intervalo}&\:\left(-\infty \:,\:\infty \:\right)\end{bmatrix}$