$\left(a^3-5a^2b-8ab^2\right)\left(-4a^4m^2\right)$
$2x+2+7x$
$\left(a^5+2\right)\left(a^5+7\right)$
$-7b\:+\:4\:-\:5b\:+\:2$
$2x+3\ge1$
$\sin^2\left(x\right)-\cos^4\left(x\right)\cdot\sin^2\left(x\right)$
$y-y^2$
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