Question

Can you help me and please show work for I can understand

Answer 1

R = 0 and (x - 4 ) is a factor of p(x)

Explanation:

To find the remainder on dividing by (x - 4 ), evaluate p(4)

p(4) = 4³ - 11(4) - 20 = 64 - 44 - 20 = 0 ← remainder

Since f(4) = 0 then x = 4 is a root and (x - 4) is a factor