Question 462182
b2+b-2=0
b2+2b-b-2=0
b(b+2)-1(b+2)=0
(b+2)(b-1)=0
if(b-1)=/ 0
b+2=0
therefore,b=-2..............(1)
if(b+2)=/ 0
(b-1)=0
b=1...............(2)
therefore, b=1,-2