$\int\frac{\left(x^3+32\right)}{\left(x^2+7x+12\right)}dx$
$-\sqrt{2}+\sqrt{2}i$
$\cos\left(\frac{\pi}{2}-x\right)=\frac{2}{7}$
$x^2+4x=60$
$-7y+-6y+-y$
$x^2+2x+1<0$
$\sqrt{7}\cdot\sqrt{3}$
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