I am just learning calculus, and I have to differentiate a problem. I have worked on it and I have asked people, but they do not know. Here is what I have done thus far: f(x) = 3x-6 – 8x5 + 9x2/5 + √7 f(x) = 3(dx-6/dx) – 8(dx5/dx) + 9(dx2/5/dx) + √7(d/dx) f(x) = 3(-6x5) – 8(5x4) + 9(2/5x-3/5) + 0 f(x) = -18x5 – 40x4 + 18/5x-3/5 I am wondering if this is it, or whether I need to do more? If I need to do more, could you say which rule I should use or some other type of advice? Thanks P.S. If it is wrong, could you please tell me as well.