Tìm x, biết: 2/5x - (-3/5x + 1/2) = (3/2)^2
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Bài 5. Tim x, biết:
a) \(\frac{2}{5}x - \left(-\frac{3}{5}x + \frac{1}{2}\right) = \left(\frac{3}{2}\right)^{2}\)
b) \(\frac{1}{2}x - \left(x + \frac{5}{9}\right) = \left(-\frac{1}{3}\right)^{2}\)
c) \((5x - 1)\left(2x - \frac{1}{3}\right) = 0\)
Bài 6. Tim x, biết:
a) \(3^{x} + 3^{x + 2} = 9^{17} + 27^{12}\)
b) \(\left(\frac{5}{6}\right)^{2^{x - 1}} = \left(\frac{5}{6}\right)^{5}\)
c) \((2x - 3)^{3} = -64\)
d) \((3x - 1)^{4} = 81\)
e) \(\left(x - \frac{1}{4}\right)^{2} = 4\)
Bài 5. Tim x, biết:
a) \(\frac{2}{5}x - \left(-\frac{3}{5}x + \frac{1}{2}\right) = \left(\frac{3}{2}\right)^{2}\)
b) \(\frac{1}{2}x - \left(x + \frac{5}{9}\right) = \left(-\frac{1}{3}\right)^{2}\)
c) \((5x - 1)\left(2x - \frac{1}{3}\right) = 0\)
Bài 6. Tim x, biết:
a) \(3^{x} + 3^{x + 2} = 9^{17} + 27^{12}\)
b) \(\left(\frac{5}{6}\right)^{2^{x - 1}} = \left(\frac{5}{6}\right)^{5}\)
c) \((2x - 3)^{3} = -64\)
d) \((3x - 1)^{4} = 81\)
e) \(\left(x - \frac{1}{4}\right)^{2} = 4\)