$2x^5-2x^3$
$sin^2\left(30\right)^1+\cos^2\left(30\right)$
$\frac{\sin\left(2x\right)+sin\left(4x\right)}{cos\left(2x\right)-cos\left(4x\right)}=cot\left(x\right)$
$2x^2-27x-80$
$54:\left(\left(-7\right)+\left(-2\right)\right)$
$4x^2\cdot8x^3$
$\frac{1}{4}\left(x^2+x\right)$
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