−5y−4y−y-5y-4y-y−5y−4y−y
2x+7≤4−x2x+7\le4-x2x+7≤4−x
4x2+4x+104x^2+4x+104x2+4x+10
5x2−6x+95x^2-6x+95x2−6x+9
(2x − 7) . (2x +2)\left(2x\:-\:7\right)\:.\:\left(2x\:+2\right)(2x−7).(2x+2)
r2+7r+7r^2+7r+7r2+7r+7
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