$\sin x=1-2\cos^2x$
$4x^4-36y^4m$
$7x-2\le x+3$
$x^4+2x^3-13x^2-14x+24$
$\ln e^{3x}$
$7x-49=0$
$\frac{dy}{dx}\left(y=\left(sin2x\right)^{5x}\right)$
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