$\csc\left(x\right)=5-2\csc\left(x\right)$
$f\:\left(x\right)=\left(2x^2+3\right)^x\:.\left(3x\right)^{2x}$
$\pi\int_0^2\left(x^2+1\right)^2dx$
$8x^2\:-\:128$
$-31=4x-7$
$\:\left(\frac{1}{5\:}i+2\right)\left(\frac{1}{5}i-2\right)$
$64d^2\:-\:16d\:$
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