9x²-2x+1/9
36x²+12x+1
16a²-8ab+b²
x^8-18x^5+81x²
(9y-1)²=(1-9y)²
(b³+4a)²=(4a+b³)²
(2x+y-2x+y)(2x+y+2x-y)=8xy
c²-2c(a+b)+a²+2ab+b²=c²-2ac-2bc+a²+2ab+b²
9x²-2x+1/9
36x²+12x+1
16a²-8ab+b²
x^8-18x^5+81x²
(9y-1)²=(1-9y)²
(b³+4a)²=(4a+b³)²
(2x+y-2x+y)(2x+y+2x-y)=8xy
c²-2c(a+b)+a²+2ab+b²=c²-2ac-2bc+a²+2ab+b²