Subject :IMO Class : Class 10

If H.C.F of (x - 5)(x^{2} - x - a) and (x - 4) (x^{2} - 2x - b) is (x - 4)(x - 5), find the values of a and b respectively.

(a) 15, 18

(b) 10, 7

(c) -8, 10

(d) 12, 15