If a+b+c=14 \text { and } a^{2}+b^{2}+c^{2}=96then (ab + bc ca)? – InterviewSolution

1.	If a+b+c=14 \text { and } a^{2}+b^{2}+c^{2}=96then (ab + bc ca)?
Answer» (a+b+c)^2==a^2+b^2+c^2+2(ab+BC+ca)(ab+bc+ca)=0

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