$\frac{7x-3}{4-x}\ge-2$
$m^6-9n^8$
$\frac{1}{\sin x}-\frac{\cos x}{\sin x}\cos x=\sin x$
$\frac{d}{dx}x^3e^y-ye^x=0$
$x^2-2x-48=0$
$\int\left(x\sqrt{4x^2+424}\right)dx$
$3\left(2x+8\right)-12=3x+6$
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