$9\left(1-2senxcosx\right)=1$
$3x^{2}-5x+3x+1$
$\frac{dy}{dx}=2x+z$
$16x^2+72xyw$
$n+\left(-5n\right)$
$\lim_{x\to0}\left(\frac{\left(3a+1\right)}{\left(2x+1\right)^{\frac{1}{x}}}\right)$
$\sin\left(\arctan\left(a\right)\right)$
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