$1-cot^2x-csc^2x$
$-597+-78$
$\frac{\:-130}{-10}$
$\tan\left(x\right)+cos\left(x\right)=\frac{\csc\left(x\right)}{cos\left(x\right)}$
$-5.\left(5\right)+\left\{2-\left[4+6\left(+11\right)\right]\right\}$
$3x^2+5x^2+-6+-4x$
$3x+2y=17$
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