$y^2-9y+22$
$y^4-2y^3$
$4z+1-z^2$
$50+2x<6x$
$\left(8x^2\:+\:9y^3\right)\:^2$
$y=\left(x+2\right)\left(x+5\right)$
$\left(4x^3+9y^2\right)\:\:\left(4x^3-9y^2\right)$
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