Answer:
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
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