$1+\cot^2\infty=\csc^2\infty$
$\left(\left(a-c\right)-\left(a-b\right)\right)-\left(\left(b-c\right)-\left(a+c\right)\right)$
$\frac{xln\left(x^2+1\right)}{\sqrt{x^3}}$
$\left(2^5\right)+\left(-3^3\right)$
$\frac{1}{x^{-5}}$
$b\left(2x^3+x^5\right)\left(2x^3-x^5\right)$
$6t-t^2$
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