Question: f(x) = x 3 2x 2 19x + 20 a. Show that (x + 4) is a factor of f(x). b. Hence, or

f(x) = x3 – 2x2 – 19x + 20

a. Show that (x + 4) is a factor of f(x).

b. Hence, or otherwise, find all the solutions to the equation x3 – 2x2 – 19x + 20 = 0.

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To show that x 4 is a factor of fx x3 2x2 19x 20 we need to prove that when x 4 fx becomes zero a Le... View full answer

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