$3x^2y-2xy+3y\cdot xy+2y$
$\int x\cdot sin\left(kwx\right)dx$
$\sqrt{3+x\left(x+1\right)^2}$
$\left(3i+j-k\right)\left(2i+3j-4k\right)$
$\frac{\left(x+y\right)^2+\left(x-y\right)^2}{x\left(x^2+3y^2\right)}$
$\left(2a-4\right)\:=4$
$\left(a^2+2ab\right)^3$
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