100
(x+2)(x+3)
x2 + 5x + 6
100
(3x+5) + (4x+1)
7x + 6
100
(3x2+5x) - (2x2-3x)
x2-8x
200
(10x-3) + (2x-3)
12x-6
200
(4x2+3x) - (4x2-3x)
6x
300
(3x+4) + (5x+2) + 2x
10x+6
300
(3x2+5x-2) - (7x2-5x+4)
-4x2+10x-6
400
(2x2+3x+7) + (8x2+3x-4)
10x2+6x+3
400
(5x2+4x-7) - (5x2+4x-7)
0
500
(x2+6x-5) + (x2-8x-4)
2x2-2x-9
500
(5a2-2a-8) - (a2-6a+3)
4a2 + 4a - 11