$4c^2+12c+9$
$\cos\left(2x\right)\cos\left(3x\right)-\sin\left(2x\right)\sin\left(3x\right)$
$\tan\left(b\right)+\cot\left(b\right)$
$l-2l$
$2\left(150.000+3x\right)+6x+20\left(x-2.000\right)$
$\frac{d}{dx}x^5+5x^4-10x^2+6$
$\sqrt[7]{5^7x^{15}y^{25}z^2}$
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