$z+45=92$
$\frac{1+\tan x}{1+\cot\left(x\right)}=\tan\left(x\right)$
$-35\cdot55$
$sinx=-\frac{2}{3}$
$\left(x+4\right)\left(x-4\right)=9$
$x^4-10x^2y^2+25x^4y^4$
$\left(\frac{9m^8n^{-7}p^9}{12m^{-5}n^{-4}p^{-9}}\right)^{-1}$
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