Question

Show that(+3)is a factor of 69+11–2 +3.

Answer 1

Answer:

x+3

x=−3

p(x)=x3−x2+11x+69

p(−3)=(−3)3−(−3)2+11(−3)+69

=−27−9−33+69

=−69+69=0

Therefore (x+3) is a factor