$cot\:x.\:cos\:x.\:sen\:x=sen^2$
$\int4x^2\left(x^3+8\right)dx$
$\frac{d}{dx}\sqrt[3]{cosx}$
$3\left(2x+5\right)-2\left(4+4x\le7\right)$
$6x^3y^57$
$0,5x^2+0,2b^2\left(0.5x^2-0.2b^2\right)$
$140x^5y^4z^2-70x^4y^3z^2+105x^3y^2$
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