$1+2\sec^2\left(x\right)\cdot\tan^2\left(x\right)-\tan^4\left(x\right)$
$-7c+-4c-8c^2$
$\left(6m^2+3\right)\left(3m^2-2\right)$
$\left(4t+\frac{31}{37}\right)^2$
$x^2-36\ge0$
$23+158$
$\left(1950\right)+\left(20\right)$
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