$\left(x+6^3\right)$
$103^2$
$2x^4+14x^3+8x^2$
$\frac{cos^2x}{\left(1-sinx\right)^2}$
$2x+8-5x+2$
$m^2+8m+1$
$4\sin\left(2x\right)\cos\left(2x\right)\left(x\right)-\sin\left(x\right)\sin\left(2x\right)^2$
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