Let \\alpha=2-3 i be a root of the equation z^{2}-4 z+k=0, where k is a real number. If \\beta is the other root, then the value of \\alpha^{2}+\\beta^{2} is

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Let α=2−3i be a root of the equation z2−4z+k=0, where k is a real number. If β is the other root, then the value of α2+β2 is

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