$cos2x=\frac{15}{17}$
$\left(\frac{3}{4}\sqrt[3]{3a}\right)^3$
$\left(2n+9\right)\left(2n-9\right)$
$\left(2x^{\frac{1}{3}}y\right)^38$
$\int_{1+x}^{2x}x^2dz$
$\left(\frac{1}{2}+\frac{x}{z}\right)^2$
$x^2+2x+1=17$
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