Consider the cubic polynomial g(x)=3x3+ax2+bx+4.
(i) The remainder obtained on dividing g(x) by x−1 is 7. Form an equation involving a and b.
(ii) The remainder obtained on dividing g(x) by x+2 is −5. Form a second equation involving a and b.
(iii) Solve the simultaneous equations from parts (i) and (ii) to find the numerical values of a and b.
(iv) Using the values of a and b, determine the remainder when g(x) is divided by x−3.