Hi! So I have a few questions from the year 12 Cambridge extension 1 book that I can't seem to get!
1) If one root of the equation x3-bx2+cx-d=0 is equal to the product of the other two roots, show that (c+d)2 = d(b+1)2
2) If the zeroes of the cubic y = x3+ax2+bx+c=0 form an arithmatic...