$\frac{\sin\left(2x\right)^2}{\cos\left(2x\right)^4}$
$-7.6-\left(-4.3\right)$
$\int\frac{6e^{2x}}{\sqrt{1-e^{2x}}}dx$
$\frac{4}{9}m^4-m^6$
$s^2+12s+20$
$\left(-2\left(-2\right)\right)^4-199$
$8x^7+5x^6+3x^4$
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