Question 48532
2x~2+3x-4x~2+6x+9=0 or -2x~2+7x+9=0 or 2x~2-7x-9=0 or (2x-9)(x+1)=0 or 
2x-9=0 or 2x=9 or x=-9/2 or x=-4.5 & x+1=0 or x=-1