SOLUTION: What are the steps to solving a problem that’s states : X^4 - 4x^3 - 6x^2 + 36x - 27 has a factor of (x-3) with a multiplicity of two ?

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Question 1131131: What are the steps to solving a problem that’s states :
X^4 - 4x^3 - 6x^2 + 36x - 27 has a factor of (x-3) with a multiplicity of two ?

Answer by josgarithmetic(39800) About Me  (Show Source):
You can put this solution on YOUR website!
Rational Roots Theorem indicates possible roots to check are -27, -9, -3, -1, 1, 3, 9, 27.

Try using synthetic division to check for any or all of them. Remainder 0 means, the checked value is a root of the given polynomial.

x-3 factor is the root or zero, 3.
3   |   1   -4   -6   36   -27
    |       3    -3  -27    27
    |____________________________
        1   -1   -9   9      0

Test again using the resulting coefficients from that result.


3    |    1   -1   -9   9
     |   
     |         3    6  -9
     |____________________________
         1    2    -3   0

Resulting coefficients now mean  x%5E2%2B2x-3
which factorizes as  %28x%2B3%29%28x-1%29


The full factorization of the given polynomial is highlight%28%28x-3%29%5E2%28x%2B3%29%28x-1%29%29.