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Q19 of 59 Page 2

If 4^x – 4^x^-1 = 24, then (2x)^x equals

4^x – 4^{x – 1} = 24

Let 4x = y

y - = 24

4y – y = 96

y = 32

4^x = 32

2^2x = 2⁵

(2x)^x = (2 × )^5/2

= (5)^5/2 = 25

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