$4x^2+12+9$
$\left(-3\right)\left(9+2\right)$
$2\sin\left(x\right)^2+5\sin\left(x\right)-12=0$
$x^2-5<=0$
$\frac{\sqrt{4x+28-4}}{x+3}$
$\frac{dy}{dx}+\frac{5xy^3}{2}-5y=0$
$\int x\cot\left(x^2+2\right).dx$
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