Find cubic polynomial if zeros are 2, 1, 1
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Answer:
x^3 - 4x^2 +5x -4
Step-by-step explanation:
Roots are 2,1 and 1
Therefore the polynomial is (x-2)*(x-1)*(x-1)
=> (x^2-2x-x+2)*(x-1)
=> (x^2 - 3x + 2)*(x-1)
=> (x^3 -3x^2 +2x -x^2 +3x -2)
=> (x^3 - 4x^2 +5x -4)
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