$4x-3\left(7x+1\right)$
$2^2-9\cdot2+18$
$\left(1-216m^1\right)$
$\int\:\:x^4\sqrt{1-x}\cdot\:\:dx$
$\left(\sqrt{1-x}\right)^4$
$x-1=-5$
$20x^2-125$
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