$\frac{\sec^{2}x}{2-\sec^{2}x}$
$\left(1\:+\:m^3\right)\:\left(1+m\right)$
$\int\left(\sqrt{\sec^2\left(x\right)+1}\right)\left(\tan\left(x\right)\right)dx$
$\sqrt{0.4}$
$10\::\:\left(-5\right)\::\:\left(-1\right)$
$z^2-40z+20=0$
$3\sin^2x=7\sin x-4$
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