$\frac{dy}{dt}+4y=12$
$3=\log\left(4643\right)$
$y+5=x^2-2x+1$
$\int\frac{2x+1}{2x^2-27}dx$
$x^2-6x+25=11$
$x^2-13x+84.5$
$\left(\cot^2a+1\right)\left(\cot^2a-1\right)=\csc^4a-2\csc^2a$
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