(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-7)²=х²-2×7×х+49=х²-14х+49(5а+1)²=5а²+2×1×5а+1=5а²+10а+1(2х-3у)²=2х²-2×2х×(-3у)+3у²=2х²+12ху+3у²(а²-3)²=а⁴-2×(-3)×а+9=а⁴+6а+9(9+а)²=81+2×9×а+а²=а²+18а+81(8-b)²=64-2×8×(-b)+b²=b²+16b+64(3у-4)=3у²+24у+16(5a+6b)²=5а²+60аb+6b²(a-y³)²=а²-2ау³+у6(a+c)²=а²+2ас+с²(11-y)²=121-22у+у²(10+4c)²=4c²+80c+100(-3c+a)²=3c²-6ac+a²(a²+b²)²=a⁴+2a²b²+b²