$15x^2-14x=8$
$10g^3-20g^2+25g$
$\frac{y^4-x^4}{y^2-x^2}$
$\tan\left(2x\right)+\cot\left(2x\right)$
$\cos\left(\arccos\left(u\right)-\arctan\left(v\right)\right)$
$3\:-\:9x\:<\:-6$
$\lim_{x\to\infty}\left(\frac{2x-5}{x+3-5^{\frac{1}{x}}}\right)$
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