x^7/81=27
(3/5)mũ 5 . x = (3/7)mũ 7
(-1/3)mũ 3 . x = 1/81
(x - 1/2) mũ 3 = 1/27
(3x + 1)mũ 3 = -27
(x + 1/2) mũ 4 = 16/81
(4/5) mũ 5.x = (4/5) mũ 7
x^7/81 = 27
x^8/9= 729
Tìm x:
a) (3/5)^5 * x = (3/7)^7
b) (-1/3)^3 * x = 1/81
c) (x - 1/2)^3 = 1/27
d) (x+1/2)^4 = 16/81
\(\frac{x^7}{81}=27\)
Tìm X biết : x^7/81 = 27. x^8/9 = 729
\(27=\frac{x^7}{81}\)
\(27=\frac{x^7}{81}\)
\(27=\frac{x^7}{81}\)
