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Note by Pranjal Rs 4 years, 3 months ago

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Multiply numerator and denominator by 5^(1/16) - 1, and apply a^2 - b^2 = (a-b)(a+b) a couple of times, you get

x = 4(5^(1/16 - 1)/(5 - 1) = 5^(1/16) - 1

x + 1 = 5^(1/16)

(x + 1)^48 = 5^(48/16) = 5^3 = 125

Answer is (B) – Pi Han Goh · 4 years, 3 months ago

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@Pi Han Goh – Hey!! Thank you very very much friend.Needed it badly. Regards Pranjal – Pranjal Rs · 4 years, 3 months ago

very good so intersting – Manoj Kumar · 4 years, 3 months ago

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TopNewestMultiply numerator and denominator by 5^(1/16) - 1, and apply a^2 - b^2 = (a-b)(a+b) a couple of times, you get

x = 4(5^(1/16 - 1)/(5 - 1) = 5^(1/16) - 1

x + 1 = 5^(1/16)

(x + 1)^48 = 5^(48/16) = 5^3 = 125

Answer is (B) – Pi Han Goh · 4 years, 3 months ago

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– Pranjal Rs · 4 years, 3 months ago

Hey!! Thank you very very much friend.Needed it badly. Regards PranjalLog in to reply

very good so intersting – Manoj Kumar · 4 years, 3 months ago

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