fin the value of ab + bc + ca if a² +b² +c² =30 and a + b + c = 12​

1 thought on “fin the value of ab + bc + ca if a² +b² +c² =30 and a + b + c = 12​”

1. Answer:

   1. 30

   2. 12

   Step-by-step explanation:

   a²+b²+c²=30

   = 1+ 4+9+16=30

   and

   a+b+c=12

   =2+4+6=12

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