Find the value for k, if the remainder is 12, when 2x^3+kx^2-18x+20 is divided by x-2.
I solved this question using long division and I got the correct answer of k=3.
My teacher says though I should do it this way:
I understand that process of solving, but I don't understand how P(2) I get from x-2 =12(the remainder)
Anyone help explain??
PS: Anyone know where I could find some worded problems for Cubic Functions, because we have not done any but there will be some in our Cubic Functions Test tomorrow?????