a. Show that (x 2) is a factor of 9x 4 18x 3 x

Question:

a. Show that (x − 2) is a factor of 9x4 – 18x3 – x2 + 2x.

b. Hence, find four real solutions to the equation 9x4 − 18x3 − x2 + 2x = 0.

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