$4\left(x+2\right)-93\left(x-5\right)$
$1\cdot10^3$
$9m+3m$
$\int\frac{3x}{\left(x^2-1\right)^5}dx$
$5b+3b$
$2\cdot10+\left|-5^2\right|\left(-2+\right)\left|-2+6+3\right|$
$\left(1+sina\right)\left(1-sina\right)+cos^2a$
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