$\frac{dy}{dx}\sqrt[3]{\frac{cos^4\left(2x\right)}{\left(x^3-8\right)^2}}$
$-2x\left(5x^3+11x^2-2.7x\right)$
$\sqrt{5}.\sqrt{4}$
$\left(x+7\right)^2=x^2+14x+49$
$-26+2$
$\int7z\left(3z^2-2z\right)dz$
$\frac{-10+\sqrt{3}}{2}=-5+\cos\left(x+135\right)$
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