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If $$2x + \frac{1}{{4x}} = 1{\text{,}}$$ then the value of $${x^2} + \frac{1}{{64{x^2}}}$$ is?
Answer & Solution
Correct Answer:
Option
A
$$\eqalign{
& 2x + \frac{1}{{4x}} = 1 \cr
& {\text{Dividing by 2 both side}} \cr
& \Rightarrow x + \frac{1}{{8x}} = \frac{1}{2} \cr
& {\text{Squaring both side }} \cr
& \Rightarrow {x^2} + \frac{1}{{64{x^2}}} + 2 \times x \times \frac{1}{{8x}} = \frac{1}{4} \cr
& \Rightarrow {x^2} + \frac{1}{{64{x^2}}} + \frac{1}{4} = \frac{1}{4} \cr
& \Rightarrow {x^2} + \frac{1}{{64{x^2}}} = \frac{1}{4} - \frac{1}{4} \cr
& \Rightarrow {x^2} + \frac{1}{{64{x^2}}} = 0 \cr} $$
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