Math, asked by kannanchellappan2012, 1 year ago

if a^2+b^2+c^2=80 and a+b+c=20, then find the value of ab+bc+ca​

Answers

Answered by rashi204
0
ans is.. - 210
see... acc to formula.. a + b + C whole square is equal to a square + b square + c square + 2 (a b + BC + CA ) evaluate and get the answer. okay
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