$7x^2+10x-8$
$2\cos\:\left(x\right)-3\cot\:\left(x\right)\csc\:\left(x\right)$
$y=\frac{x}{a}+\frac{a}{x}$
$y=\tan\left(6x^2-4\right)$
$6b^4+3b^2-15$
$\lim_{x\to0}\left(2xln\left(1+\frac{5}{x^2}\right)\right)$
$\int\frac{-\frac{19}{49}x}{\left(x-4\right)^2}dx$
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