$9-12t+4t^2$
$\int\left(\left(x^3+5\right)^8\left(3x^2\right)\right)dx$
$\frac{x^2-2x}{\sqrt[20]{x-1-1}}$
$sen2xsenx$
$3-4sin^2x+3cosx=0$
$2x+4y-6x-2y$
$2y+1+y$
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