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4 May, 20:35

Multiplicity of x^3+3x^2+3x+1=0

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  1. 4 May, 21:45
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    If x = - 1 this gives - 1 + 3 - 3 + 1 = 0

    so x = - 1 is one root

    if we divide the expression by (x + 1) we get the quotient x^2+2x+1

    which factors to (x+1) (x+1)

    so the multiplicity is 3
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