$sen\:x=\frac{cos\:x}{ctg\:x}$
$32m^2-12m-9$
$\log_{11}w-7=-6$
$\frac{\cot\left(x\right)\cdot\tan\left(x\right)-\sin\left(x\right)}{\sin\left(x\right)\cdot\cot\left(x\right)}$
$2+3\left|2\left(4+5\right)+7-3\left(1+3\right)\right|$
$\left(3\sin x-4\sec^{2}x\right)$
$-x^3-2x-2x^2$
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