If a square + b square + csquare =30 And a+b+c =10 then find the value of ab+bc+ca
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( a + b + c )2 = a2 + b2 + c2 + 2 ( a + b + c ). substitutins values
100 = 30 + 2 ( ab + bc + ca ). hence
ab + bc + ca = 35
100 = 30 + 2 ( ab + bc + ca ). hence
ab + bc + ca = 35
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Answer:
ab+bc+ca =35
Step-by-step explanation:
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