$x^{2+21-10=0}$
$\int\frac{3x^3+x}{\left(x^2-1\right)}dx$
$\frac{\left(8x^3+2x^2-5x+1\right)}{\left(2x-1\right)}$
$\cot\left(3x\right)\sin\left(3x\right)$
$3x^2+21x+30=0$
$2x^2+4x-16$
$\sqrt[2]{144}\cdot\sqrt[2]{25}$
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