Question

If a+b+c = 9 and ab + bc +ca= 26, then find a? + b2 + c2.
hote the following using suitable identity ,, answer my question
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Answer 1

Step-by-step explanation:

It's the answer.

lts cut from the right a bit.

Answer 2

Answer:

a+b+c=9(given)

ab+bc+ca=26(given)

a2+b2+c2=29

Step-by-step explanation:

a+b+c=9(given)

ab+bc+ca=26(given)

a2+b2+c2=29

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

(9)2=a2+b2+c2+2(ab+bc+ca)

81=a2+b2+c2+2(26)

81-52=a2+b2+c2

29=a2+b2+c2