If the expression px2 + qx + r is equal to 3 when x = 0, it leaves reminder 5 when divided by (x + 2) and a reminder 3 when divided by (x + 1), then find the equation whose roots are p, q and r.
1
(x3 - 4x2 + 6x - 3) = 0
2
(x3 - 7x2 + 9x - 3) = 0
3
(x3 - 5x2 + 7x - 3) = 0
4
(x3 - 6x2 + 8x - 3) = 0