if a+b+c=6 and a^2+b^2+c^2=14 find ab+bc+ca
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Step-by-step explanation:
(a+b+c)²=a²+b²+c²+2ab+2bc+2ca
(6²)=14+2(ab+bc+ca)
36-14=2(ab+bc+ca)
22/2=ab+bc+ca
ab+bc+ca=11
HOPE IT HELPS
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