Question

divide the polynomial x³-ax²+5-2a is divided by x-a

Answer 1

x-a=0
=> x = a
f(x) = x³-ax²+5-2a
f(a) = (a)³-a(a)²+5-2a
= a³- a³ + 5 - 2a
= 0+5-2a
= 5 - 2a