?
If $$2x + \frac{1}{{2x}} = 2,$$ then what is the value of $$\sqrt {2{{\left( {\frac{1}{x}} \right)}^4} + {{\left( {\frac{1}{x}} \right)}^5}} ?$$
Answer & Solution
Correct Answer:
Option
D
$$\eqalign{
& 2x + \frac{1}{{2x}} = 2 \cr
& {\text{Now, }}2x = 1 \cr
& \Rightarrow x = \frac{1}{2} \cr
& \Rightarrow \frac{1}{x} = 2 \cr
& \sqrt {2{{\left( {\frac{1}{x}} \right)}^4} + {{\left( {\frac{1}{x}} \right)}^5}} \cr
& = \sqrt {2 \times {2^4} + {2^5}} \cr
& = \sqrt {32 + 32} \cr
& = \sqrt {64} \cr
& = 8 \cr} $$
Join the Discussion
Login to post a comment or share your explanation.
Login