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If alpha , beta be the roots of x^n - 2 x + 4 = 0, prove that alpha + beta ^n = 2^n+1
If alpha , beta be the roots of x^n - 2 x + 4 = 0, prove that alpha" + beta ^n = 2^n+1 cos n.pai/3
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Linear Algebra with Applications
Authors: Steven J. Leon
7th edition
131857851, 978-0131857858
