Tìm x, \(2^2 + 2^{2x} + 2^{2x-2} = 11.2\)

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Bài 2: Tìm x

a) \(2^2 + 2^{2x} + 2^{2x-2} = 11.2\)

b) \(\left( \frac{1}{5} \right)^{x^4} + \left( \frac{1}{5} \right)^{x^2} = \frac{31}{625}\)

c) \(5^{x+4} - 3^{x+3} = 2.5^1\)

d) \(3^x + 3^{2x} - 9^y + 27^{x^2}\)

e) \(5^{2x-1} - 6^{x-1} = 36^0\)

f) \((3y - 1)^{10} - (3y - 1)^{20}\)