$\frac{\left(4x^5+8x^4-20x^2-40x-23\right)}{4x+4}$
$7x^2+27x-4=0$
$m^2+3m-54$
$\left(3x^4+2y^4\right)^2$
$\sqrt{6\sqrt{9}}$
$\frac{6^2}{2^2}$
$\int21sec3xtan3xdx$
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