$4x^3+4x^2+mx+n\::\:2x^2-x-1$
$2b\:-5\:=\:8b\:+\:1$
$3x-7=20$
$\:12\:\:+\:\:\left(\:-\:28\:\right)\:-\:\:\left(\:-\:17\:\right)\:\:+\:15$
$8x^3+12x^2-16x$
$3x^2-2x=16$
$\left(2x+y+3z\right)^2$
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