find the value of k for which the polynomial x^3-3x^2+3x+k has 3 asit zero
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if 3 is its zero
3³-3×3²+3×3+k=0
27-27+9+k=0
9+k=0
k= -9
3³-3×3²+3×3+k=0
27-27+9+k=0
9+k=0
k= -9
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