2/3^2(3-2×2/3+2/3^2)
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2/3×2/3(3-2×2/3+2/3×2/3)
4/9(1×2/3+4/9)
4/9(2/3+4/9)
4/9(6+4/9)
4/9×10/9
40/81
Hope it will help you
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