Prove that for all real numbers a and b, at least one of which is not 0, a^2 + ab + b^2 > 0. ...

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Prove that for all real numbers a and b, at least one of which is not 0,
a^2 + ab + b^2 > 0.

    • 8 years ago
    We need to show that a^2 + ab + b^2 > ab That is, a^2 + b^2 + 2ab - ab > 0 ...
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      Provethatforallrealnumbersaandbatleastoneofwhichisnot0.doc