1
1.x²+2xy+y²
2.m²-2mn+n²
3.c²+2cd+d²
4.p²-2ps+s²
5.a²+2ab+b²
6.a²-2ab+b²
2.(3x-1)²=9x²-6x+1
(5a+4)²=25a²+40a+16
3.
1.a²+2ax+x²
2.25a²-10ax+x²
3.9a²+12ax+4x²
4.4x²-4xy+y²
5.9m²+18mn+9n²
6.y⁶-20y⁴+100y²
