x2
x
=0
-20x2
-20x2-20x
-20x2-19x
-20x2-18x
-20x2-17x
-20x2-16x
-20x2-15x
-20x2-14x
-20x2-13x
-20x2-12x
-20x2-11x
-20x2-10x
-20x2-9x
-20x2-8x
-20x2-7x
-20x2-6x
-20x2-5x
-20x2-4x
-20x2-3x
-20x2-2x
-20x2-x
-20x2+x
-20x2+2x
-20x2+3x
-20x2+4x
-20x2+5x
-20x2+6x
-20x2+7x
-20x2+8x
-20x2+9x
-20x2+10x
-20x2+11x
-20x2+12x
-20x2+13x
-20x2+14x
-20x2+15x
-20x2+16x
-20x2+17x
-20x2+18x
-20x2+19x
-20x2+20x
-20x2+21x
-20x2+22x
-20x2+23x