if a+b+c=0and a square +b square +c squre =16,find the value of ab+bc+ca
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a + b + c = 0
that is a + b = minus C
a square + b square equals to minus C square so where we can find the answer
the answer is 32
that is a + b = minus C
a square + b square equals to minus C square so where we can find the answer
the answer is 32
bingooo:
its wrong i think the answer is -8 by (a+b+c)^2
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