\(25x^3 - 4x\) \((cos(8x-4x))^/\) \((7x^4+sinx)^/\) \((4x^6-78)^/\) \((8\sqrt{x}+7x)^/\) \((\frac{2}{x}-2\sqrt{x})^/\) \(75x^2-4\) \(-8sin(8x-4)\) \(28x^3+cosx\) \(24x^5\) \(\frac{4}{\sqrt{x}}+7\) \(-\frac{2}{x^2}-\frac{1}{\sqrt{x}}\) :