$2a^2-\frac{3}{2}a^2+\frac{1}{4}b^2-\frac{2}{3}b^2+\frac{5}{3}-b^2$
$2\arcsin\left(\frac{5\left(-\frac{3}{5}\right)-1}{3}\right)-\pi$
$\frac{6}{x}=7-2x$
$55x-x^2-110=0$
$\int\sin^2\left(3x\right)\cos^4\left(3x\right)dx$
$x^2+13x+143$
$3-2\left(-5\right)\left(2+3\left(-4+3\right)\right)$
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