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Question
The ratio `(2^(log_2 1/4 a) - 3^(log_27(a^2 + 1)^3) - 2a)/(7^(4log_49a) - a - 1)` simplifies to ______.
Options
a2 – a – 1
a2 + a – 1
a2 – a + 1
a2 + a + 1
MCQ
Fill in the Blanks
Solution
The ratio `(2^(log_2 1/4 a) - 3^(log_27(a^2 + 1)^3) - 2a)/(7^(4log_49a) - a - 1)` simplifies to `underlinebb(a^2 + a + 1)`.
Explanation:
`(2^(4log_2 a) - 3^(3/3log_3(a^2 + 1)) - 2a)/(7^(4/2log_(7a)) - a - 1)`
⇒ `(a^4 - (a^2 + 1) - 2a)/(a^2 - a - 1)`
⇒ `(a^4 - a^2 - 2a - 1)/(a^2 - a - 1)`
⇒ a2 + a + 1
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