H24

\(\dfrac{1}{3}\)x(2x-\(\dfrac{1}{3}\))\(^2\)-\(\dfrac{25}{27}\)=0

KL
1 tháng 11 2023 lúc 13:33

1/3 . (2x - 1/3) - 25/27 = 0

1/3 . (2x - 1/3) = 25/27

2x - 1/3 = 25/27 : 1/3

2x - 1/3 = 25/9

2x = 25/9 + 1/3

2x = 28/9

x = 28/9 : 2

x = 14/9

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