$-16x^2-272x+1980$
$2xy+y^2$
$2^2+\left|3\left(-6+8\frac{1}{3}\right)+17\right|$
$\left(-1+i\right)+\left(3+2i\right)$
$\frac{cos\left(x-y\right)}{cos\left(x\right)\cdot\:\:sin\left(y\right)}=tan\left(x\right)+cot\left(y\right)$
$2t^2-t+1+4t^2$
$32-\infty$
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