plzzz explain this!!!
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It's Simple Use the identity
(a+b+c)²=a²+b²+c²+2(ab+bc+ca)
Now just substitute the values
10²=36+2(ab+bc+ca)
100-36=2(ab+bc+ca)
64/2=ab+bc+ca
So,ab+bc+ca=32 Answer
(a+b+c)²=a²+b²+c²+2(ab+bc+ca)
Now just substitute the values
10²=36+2(ab+bc+ca)
100-36=2(ab+bc+ca)
64/2=ab+bc+ca
So,ab+bc+ca=32 Answer
SitakantPinku:
great
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