Question

what should be added to the polynomial x^2 - 5x + 4, so that (x-3) is factor of resulting polynomial

Answer 1

2 should be added so that (x-3) is a factor of polynomial
steps to do this are
1)first divinde the given equation by (x-3)
2) now the remainder will come 2
3) so we will add 2 to (x-3) to be factor

hope this helps :)