$\frac{3}{2}\int_0^{2\pi}cos^4xdx$
$3\left(2a+3\right)\left(2a-3\right)$
$\left(9x^2-3x+5\right)-\left(9x^2-7x-6\right)$
$\frac{\sin x}{\left(\cos x\right)}=\csc x$
$-\frac{3}{2}-\frac{5}{2}$
$\sqrt{2-y^2}+\:\sqrt{2-y^2}$
$\lim_{n\to\infty}\left(\ln\left(n+1\right)\right)$
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