$\sqrt { m } \cdot \sqrt { m }$
$\cos^2x+3\sin^2x$
$\int cos\left(5x+8\right)dx$
$\left(3x+2y\right)\left(2x+y\right)$
$5x^2-2x+3$
$\left(7+-9\right)\cdot20$
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