$m^3+3m^2-13m-15$
$\frac{d^2}{dx^2}\left(2x^3+x^2+1\right)$
$-78-48-69$
$\left(a+1\right)\left(a^2-a+1\right)=a^3+1$
$2\cos^2x=7\cos-3$
$13a+43b+12c+3c+15b+22a+40a+8b+20c+c+b+a+a+b+c+4a+2c+6b$
$\left(12-8+3\right).\:6$
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