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Question
Write the following sets in the roaster from:
B = {x | x2 = x, x ∈ R}
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Solution
Given that: B = {x | x2 = x, x ∈ R}
∴ x2 = x
⇒ x2 – x = 0
⇒ x(x – 1) = 0
∴ x = 0, x = 1
Hence, B = {0, 1}
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