2^x=2-√3, maka ^2+√3 log 4^x = ...

2^x = 2 + √3

4^x = (2^2)^x = (2^x)^2

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(2 + √3)'log 4^x
= (2 + √3)'log (2^x)²
= 2 . (2 + √3)'log (2 + √3)
= 2