Question
If a = 0.1039, then the value of `sqrt(4a^2 - 4a + 1) + 3a` is
Answer: Option C
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`sqrt(4a^2 - 4a + 1) + 3a` = `sqrt((1)^2 + (2a)^2 - 2 xx 1 xx 2a)` + 3a
`sqrt((1 + 2a)^2) + 3a` = (1 - 2a) + 3a = (1 + a) = (1 + 0.1039) = 1.1039.
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