$\sin^2x+5\cos^2x-3=0$
$16n^2-\left(m-n\right)^2$
$\int\frac{\left(x\right)}{\sqrt{16+x^2}}dx$
$\frac{x}{5}-5\ge2$
$2x\:\frac{1}{5}$
$\frac{ab^3}{b^2}$
$\log_{3.5}\left(7\right)=2$
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