When doing derivatives of functions each exponent's value of x will multiply to its coefficient. and then each x values exponent will also decrease by 1.
f(x)=4x^3-6x^2+3x0 ......3 can be written as 3x0 since they are equivalent.
f '(x)= 3*4x3-1- 2*6x2-1+0*3x0-1 ....simplify
f '(x)= 12x2 - 12x ..... Answer