$4x^2-12x+9\le0$
$\int_{-\pi}^{\pi}\sec\left(2x\right)dx$
$\int_0^{\infty}x^7e^{-x}dx$
$3y^2+7y^3$
$-2xy\cdot4x^3y^2$
$x\frac{dy}{dx}=f+1$
$x^2\:+\:2x\:+1\:\ge\:0$
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