$x-4<x\cdot\left(x-3\right)$
$8y^2-6y+\:1$
$36x^2+120xy+100y^2$
$\left(3x+1\right)\left(5-10x\right)$
$x^2-6x+24y+57=0$
$50x^2-254x+300$
$25x^2-50x^2+11x^2+4x^2$
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