Multiplying 1
(x+7)(x+3)
x2+10x+21
(2x+5)(4x+10)
x2+40x+50
3x2+12x+10+5x+4
3x2+17x+14
(x-8)(x+10)
x2+2x-80
(2x+8)(x+9)
2x2+26x+72
x2-3x+2-2x2
-x2-3x+2
(x+4)2
x2+8x+16
(x+9)2
x2+18x+81
12x2
(x-5)(x+5)
x2-25
(2x+8)(2x-8)
-4x3+x2-10+4x2-1
-4x3+5x2-11
(x+5)(x2+3x+4)
(x+2)(4x2-x+3)
4x3+7x2+x+6