$14\cdot14$
$\left(\sec\left(x\right)-1\right)\left(\csc\left(x\right)+\cot\left(x\right)\right)=\tan\left(x\right)$
$x=x+5$
$x^4+7x^3+5x^2-31x-30$
$5m+1<4$
$\left(-3x^2+2x\right)^3$
$\left(3-zx\right)^2$
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