a2 + b2 +c2 =14, find ab+ bc+ca.
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use the formula for (a+b+c)^2
as
(a+b+c)^2 = a^2+b^2+c^2+2ab+2bc+2ca
take out common 2 , put the values and the answer is there.....
as
(a+b+c)^2 = a^2+b^2+c^2+2ab+2bc+2ca
take out common 2 , put the values and the answer is there.....
leosinghrajput:
a+b+c =?¿?¿?¿
answer in a bistarita way.
a+b+c ki value kya hai
I am asking the same question.
question is yours so you will know that......
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