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4x=42x 4^ {x}= \frac4{2^ {x}} ആയാൽ x ന്റെ വിലയെന്ത്?

A3/4

B2/3

C1/4

D4/3

Answer:

B. 2/3

Read Explanation:

4x=42x 4^ {x}= \frac4{2^ {x}}
22x=222x 2^ {2x}= \frac{2^{2}}{2^ {x}}
22x=22x 2^ {2x}= {2^ {2-x}}
2x=2x2x = 2 - x
3x=23x = 2
x=2/3x = 2/3


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