Question

Решите срочно
y=|x|(x-2)-4x

Answer 1

Вот ответ на пример.

Answer 2

Рассмотрим два случая:
$left { {{x geq 0} atop {y=x(x-2)-4x}} right. left { {{x textless 0} atop {y=-x(x-2)-4x}} right. \ left { {{x geq 0} atop {y=x^2-2x-4x}} right. left { {{x textless 0} atop {y=-x^2+2x-4x}} right. \ left { {{x geq 0} atop {y=x^2-6x+9-9}} right. left { {{x textless 0} atop {y=-x^2-2x-1+1}} right. \ left { {{x geq 0} atop {y=(x-3)^2-9}} right. left { {{x textless 0} atop {y=-(x+1)^2+1}} right.$