Question 45129
(2x-1)(x+3)=0 or x=1/2 & x=-3

proof 2*(1/2)~2+5(1/2)-3=0 or 2*1/4+2 1/2-3=0 or 1/2+2 1/2-3=0 or 3-3=0 or 0=0

2(-3)~2+5*-3-3=0 or 2*9-15-3=0 or 18-15-3=0 or 0=0