if a+b+c=9 and ab+bc +ca = 3 find the value of a+b+c
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Answer:
if Correct Question is to find a2 + b2 + c2
a2 + b2 + c2 = ( a+ b+ c)^2 - 2( ab + bc + ca)
= 81 - 2( 3)
= 81 -6
= 75
Answered by
1
Answer:
if Correct Question is to find a2 + b2 + c2
a2 + b2 + c2 = ( a+ b+ c)^2 - 2( ab + bc + ca)
= 81 - 2( 3)
= 81 -6
= 75
nutan
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