$tan^2\left(90-x\right)+1$
$\int\frac{3x^2}{\sqrt{5-4x^3}}dx$
$16a^2+72ac+81c^2$
$2x>8$
$\:\frac{x^3}{\left(x+3\right)^3}$
$\left[\left(-72\right)\:-\:\left(-50\right)\right]\:-\:\left[\left(-39\right)\right]$
$9-17x<33-11x$
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