English, asked by Anonymous, 7 months ago

if a+b+c=11, a^2+b^2+c^2=49
find the value of ab+bc+ca

Answers

Answered by Anonymous

0

Answer:

(a+b+c)²=a²+b²+c²+2ab+2bc+2ac

36=a²+b²+c²+2(11)

36-22=a²+b²+c²

a²+b²+c²=14

Explanation:

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