18a+ap3
2a3+16b3
x2+y2-2xy-1
a2-2ab+2b-1
x4–2x2+1
36-12x+x2
x6-y6
(x-y)3+z3
64x3-8y3
x2+14x+40
x2+7x-120
x2-51x+650
a2+7ab+12b2
p2+2pq-80q2
x2-3xy-40y2
(x2-x)2+3(x2-x)-40
(a2+b2)2-18(a2+b2)-88
(a2+7a)2-8(a2+7a)-180
x2+(3a+4b)x+(2a2+5ab+3b2)
6x2-x-15