(x-7)^2
(5a+1)^2
(2x-3y)^2
(a^2-3)^2
(9+a)^2
(8-b)^2
(3y-4)^2
(5a+6b)^2
(a-y^3)^2
(a+c)^2
(11-y)^2
(10+4c)^2
(-3c+a)^2
(a^2+b^2)^2

Х^2-14х+4925а^2+10а+14х^2-12ху+9у^2А^4-6а^2+981+18а+а^264-16в+в^29у^2-24у+1625а^2+60ав+36в^2А^2-2ау^3+у^6А^2+2ас+с^211^2-22у+у^210^2+80с+16с^29с^2-9ас+а^2А^4+2а^2в^2+в^4