$4sin^2x+2cos^2x=3$
$\int\left(\frac{\left(5x-2\right)}{x^2-x-6}\right)dx$
$a^2-3a+1=0$
$4y-4y+y$
$6+v+45$
$\int\frac{-2-8x}{x^3-x^2-2x}dx$
$cot2x=1$
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