Question

Solve by finding all roots x^4-5x^3+15x^2-45x+54=0

Answer 1

Do you know one root?

Answer 2

If so, you can use the "Dividing by (x-root)" trick.

Answer 3

my TI 83 plus said that you have 2 roots which are 2,3. find out the leftover by long division

Answer 4

might want to employ the rational roots theorem to get you started on guessing and checking.

Answer 5

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