X^2 + 5X + 4 = 0 X^2 -7X+10=0
X^2 -12X-60=4 5X^2-7X-24=0
3X^2 -4X-4=0 16X^2 -14X-1=5+4X^2
4X^2-6X-2=2 20X^2 + 5X - 3=4 - 18X^2