$x^2+4x-8=0$
$\int x^4\sqrt{6+x^5}dx$
$4x^6-4x^4+x^2$
$6\sqrt{a}-12\sqrt{b}+8\sqrt{a}-14\sqrt{b}$
$\cos\left(90\right)=1$
$\int\frac{-5x+1}{x^2+4x+9}dx$
$5w+8-w=6w$
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