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04-08-2022
Mathematics

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Show why x - 3 is a factor of m(x) = x³ x² - 5x - 3.

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04-08-2022

Answer:

If m(x) = x^3 - x^2 - 5x - 3 then x - 3 is a factor.

Step-by-step explanation:

By the Factor Theorem if (x - a) is a factor of f(x) then f(a) = 0.

m(x) = x^3 - x^2 - 5x - 3

m(3) = 27 - 9 - 15 - 3 = 0

- so x - 3 is a factor

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