Question

What are all the values of x for which (x−1)(x+2)<0?

(A) x<1
(B) x<−2
(C) −2≤x≤1
(D) −2 (E) x<0

Answer 1

C -2<=x<=1

Explanation:

x-1<0 ===> x<1

x+2<0 ===> x<-2