#1
(x²+y²)(x²-y²)
((a+b)²(a-b²))2
#2
(x+5)²=x²+10x+25
(a-2)²=a²-4a+4
(5a-2)²=25a²-20a+4
(4x+y)²=16x²+8xy+y²
(a²-1)²=a⁴-2a²+1
(2+y)²=4+4y+y²
(6-c)²=36-12c+c²
(2x+9)²=4x²+36x+81
(7m-3n)²=49m²-42mn+9n²
(b+c³)²=b²+2bc³+c^6
(p+a)²=p²+2pa+a²
(x-12)²=x²-24x+144
(6y-1)²=36y²-12y+1
(a-3x)²=a²-6ax+9x²
(x²-y²)²=x⁴-2x²y²+y⁴