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!

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.

answer: the answer is e

step-by-step explanation: