Question
`(1)/(1 + x^((b - a)) + x^((c - a)))` +` (1)/(1 + x^((a - b)) + x^((c - b)))` +` (1)/(1 + x^((b - c)) + x^((a - c)))` = ?
Answer: Option B
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Given Exp. = `(1)/((1 + x^b/x^a +x^c/x^a))` +` (1)/((1 + x^a/x^b + x^c/x^b)) ` +` (1)/((1 + x^b/x^c + x^a/x^c))`
= `(x^a)/((x^a + x^b + x^c))` +` (x^b)/((x^a + x^b + x^c))` +` (x^c)/((x^a + x^b + x^c))`
=`((x^a + x^b + x^c))/((x^a + x^b + x^c))` = 1.
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