$\int\:\:x\sqrt{2x+3}dx$
$m=\left(x+4\right)\left(x+2\right)-\left(x-4\right)\left(x-2\right)$
$2\cos\:\left(x\right)-5\cos\:^2\left(x\right)+3$
$\lim_{x\to0}\left(\frac{e^{-4x}-\sin\left(-4x\right)-1}{x\cdot\sin\left(5x\right)+2x^2}\right)$
$y=2\sin\left(3x-90\right)+1$
$\left(3a+5ab\right)^2$
$\lim_{x\to\infty}\left(\sqrt{9x^2+x+5}-\sqrt{4x^2+16x-1}\right)$
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