$\:\left(8x-7\right)\left(4x+10\right)\cdot$
$\lim_{x\to-1}\left(\frac{x^3+x^2}{x+1}\right)$
$\left(a-b\right)\left(2a+3b\right)-\left(-c\right)\:\left(-4a+5b\right)$
$\int_0^1\left(\frac{4}{1+x^2}\right)dx$
$-5a^x+9a^x-35a^x$
$\frac{d^2}{dx^2}sin2x$
$4z^2-16=36$
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