$\sin\left(2x\right)-\cos^2x=0$
$2\sin^2+\sin-1=0$
$11a^2-23a+2$
$x^2-8x+25$
$\frac{2x^2+5}{x-29}$
$\sqrt{2^4}$
$\frac{dy}{dx}=x\sqrt{3x^2+1}$
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