1)
a) (x+y)²=x²+2xy+y²
b) (a-3)²=a²-6a+9
c) (x+a)²=x²+2ax+a²
d) (b-2)²=b²-4b+4
e) (3-x)²=9-6x+x²
f) (4+a)²=16+8a+a²
2)
a) (2x - 3y)²=4x²-12xy+9y²
b) (3a+5b)²=9a²+30ab+25b²
c) (rad3x-rad2y)²=3x²-2rad6xy+2y²
d) (1/3a + 2x)² = 1/9a²+4/3ax+4x²
e) (rad3 +3b)² = 3 +6rad3 +9b²
f) (b/4 - a/3)² = b²/16 - ab/6 +a²/9
