$-9x^2+y^2-72x-153=0$
$\cos\left(u\right)=\frac{5}{13}$
$\left(4x-2\right)\left(4x+5\right)$
$10u+6-2-4$
$\int\arcsin\left(\frac{1}{2}x\right)dx$
$2^{2\cdot\frac{3}{2}}$
$4x^2-8x-1=0$
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