Verified answer

!!!!!!!!!!!!!!!!!!!!!!

Verified answer

task/29940940  ( x+1)(x-2)⩾ x²+3x-4

"решение"   ( x+1)(x-2)⩾ x²+3x-4  ⇔ x²- x-2 ⩾  x²+3x-4  ⇔ 2 ⩾ 4x ⇔ x ≤ 0,5.

ответ  : x ∈ ( - ∞ ; 0,5] .