Question

If a+b+c=6 and a square+b square+c square=30, then find the value of ab+bc+ca is​

Answer 1

Answer:

your answer is 3

Step-by-step explanation:

• we know that ,  (a+b+c)^2=a square+b square+c square+2(ab+bc+ca)
• putting the values in formula
• we have, (6)^2=30+2(ab+bc+ca)
• ab+bc+ca=3
• thank u