Adding
(3x2+4x+5)+(6x2+3x+4)
9x2+7x+9
(7x2+5x+9)-(2x2+3x+7)
5x2+2x+2
3x(2x+8)
6x2+24x
12a2+16a
4a(3a+4)
x2+9x+20
(x+4)(x+5)
(4x2+8x+5)+(6x2-3x+2)
10x2+5x+3
(6x2+7x+4)-(4x2+4x+3)
2x2+3x+1
-4x(5x-6)
-20x2+24
6y2+15y
3y(2y+5)
x2+15x+50
(x+5)(x+10)
(7x2+3x-7)+(2x2+5x-2)
9x2+8x-9
(5x2+2x+7)-(3x2-4x+3)
2x2+6x+4
(3x+4)(5x+2)
15x2+26x+8
30c2+50c
10c(3c+5)
x2-9x+18
(x-3)(x-6)
(-3x2+4x-5)+(x2-2x-2)
2x2+2x-7
(9x2-6x+8)-(2x2+2x-1)
7x2-8x+9
(-2x+6)(3x+5)
-6x2+8x+30
7h2+49h
7h(h+7)
x2+7x-30
(x+10)(x-3)
(-7x2+5x-3)+(-4x2-6x+1)
-11x2-x-2
(5x2-4x+5)-(-3x2+5x-9)
8x2-9x+14
(-7x+5)(6x-9)
42x2+93x-45
33n2-121n2
11n2(3n-11)
x2-3x-54
(x+6)(x-9)