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If A=[x:f(x)=0] and B=[x:g(x)=0] then AB will be

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By Expert Faculty of Sri Chaitanya
a
[f(x)]2+[g(x)]2=0
b
f(x)g(x)
c
g(x)f(x)
d
None of these

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detailed solution

Correct option is A

A∩B={x:x∈A and x∈B} =[x:f(x)=0 and g(x)=0]=[f(x)]2+[g(x)]2=0


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