$6x^3+7x^2-9x+2$
$\int\left(9x^2\cdot\left(x^3+3\right)^9\right)dx$
$\sin^2\left(x\right)-\cos^2\left(x\right)+3$
$6x-4\left(2x+1\right)=12$
$\lim_{x\to0}\left(\frac{x-2sen\left(x\right)}{tan\left(x\right)}\right)$
$\left(-3x^4\right)\left(3x^3\right)\left(2x^2\right)$
$4.624+7.500$
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