$2y^3-6y^2+9y$
$\left(-6\right)\:+\:2\:+\:\left(15\cdot3\right)$
$y=e^{2x+1}$
$\int\:\frac{x^4}{x^2-4}dx$
$2x^2+2x>-4$
$\left(a+b\right)^3\left(a+b\right)^1$
$x^2+5=149$
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