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2x^{2}+12x+15
2(x+3)²-3
x^{2}+8x+14
...
-5x^{2}+20x-22
-x^{2}-4x-2
2x^{2}+16x+31
2x^{2}-8x+3
5x^{2}-10x+3
-2x^{2}+12x-13
-3x^{2}-30x-72
5x^{2}+50x+121
-5x^{2}+20x-19
-3x^{2}-6x+2
-2x^{2}-8x-8
5x^{2}+20x+19
-x^{2}-6x-4
-5x^{2}-40x-77
-2x^{2}-4x
5x^{2}-10x+10
5x^{2}-50x+123
-5x^{2}+30x-47
-x^{2}+6x-7
2x^{2}+4x-3
5x^{2}-50x+120
2x^{2}+8x+6