$4tan^2x\:=2+\:sec^2x$
$\int\frac{3}{\sqrt{4x^2+16}}dx$
$36v^2-121$
$\sqrt{\frac{x-3}{2x+1}}=0$
$10+-\left(-10\right)$
$\int\left(\left(5x^4+6x^5\right)\left(3x^4+2x^3\right)\right)dx$
$\lim_{x\to2}\left(4x^3-\frac{5}{2}x^2+8x-6\right)$
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