1. Explain in detail how to get to the answer. When it's combining derivatives. ( how is f'= 4(2x3-3x^-1)+4x(6x^2+3x^-2)? Why is it so long? Is a step missing. Please give another whole different example of combining derivatives with its answer key so I can try it myself. 2) for the power rule when is it okay to use it? Does it replace quotient rule? And is it just times constant with exponent? And why is it timing coefficient and constant I thought we just do that when it's asking for 3 or 2nd derivative. 3) so when it is 2nd derivative or 3rd derivative do we just multiply exponents and delete constants? Or only when it's third derivative? Pleas explain 4) please explain how to solve I'm sorry for the amount of questions but I'm genuinely lost.