Math-- find the derivatives of the following functions; i. f(x)=(2x-7)(2x-9) ii. f(t)=2x^3-3/4x-7?

For the first function, it can be solved as it is, but I would prefer to express it as
4x^2 - 32x + 63 , for which the derivative can be taken easily --> 8x-32
For the second function, the derivative is --> 6x^2 - 3/4