What is the solution set of the quadratic inequality

x^2 + x -2 >_ 0

Delta= 1^2 -4.-2.1

Delta=1+8 =9

x=(-1 +-3)/2.1

x= -2

x= 1

(x-1)(x+2)>_0

x should be >_1

x should be <_ -2

There are two pairs of the same answer on your problem though. It would be the first and last ones.

Hope you get it!

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0