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if a+b+c=9 and ab+bc+ca=23 then a square + b square + c squarE =

Asked by RUDRA YADAV 15th September 2013, 8:30 PM
Answered by Expert
Answer:

(a+b+c)2= a2+b2+c2+ 2ab+ 2bc+ 2ca

92= a2+b2+c2+ 2(ab+bc+ca)

81= a2+b2+c2+ 2(23)

81 = a2+b2+c2+ 46

a2+b2+c2= 35

Answered by Expert 15th September 2013, 11:01 PM
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