$\int x^2\cdot\left(x-1\right)^7dx$
$-\left(-8\right)+\left(-4\right)-\left(-2\right)$
$25x^2+100x+100$
$\frac{1.6137}{2}$
$\frac{\left(\tan x+1\right)\left(\tan x-1\right)-\sec^2x}{\tan x}$
$2\left(3x^2-2xy-y^2\right)$
$\left(2x-y\right)\left(4x^2+2xy-y^2\right)$
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