$-74-90-75+34-12$
$\tan^2\left(\theta\right)=\frac{1}{3}$
$-3x+4y-2x-5x+6y$
$\left(4a-b\right)\left(3a+b\right)$
$\left|-1\right|<0$
$4+2\cdot2$
$3\tan^2\left(x\right)+\sec^2\left(x\right)+1=0$
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