If a²+b²+c²=20 and a+b+c=9 find ab +bc+ca – InterviewSolution

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1.	If a²+b²+c²=20 and a+b+c=9 find ab +bc+ca
Answer» <html><body><p><strong><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a>:</strong></p><p><a href="https://interviewquestions.tuteehub.com/tag/sorry-648642" style="font-weight:bold;" target="_blank" title="Click to know more about SORRY">SORRY</a> I don't know</p><p>ffddghh</p></body></html>

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