18*(1/9)² - 20*1/9. Помогите решить проблему!. Created by ivanovaira200. matematika-ru

9. Помогите решить проблему!...

auntpandairiska 18 х ( 1/9) ^2 - 20 x 1/9
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1) ( 1/9)^2 = 1/81
2) 18 x 1/81 = 18/81
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3) 20 x 1/9 = 20/9
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4) 18/81 - 20/9 = 18/81 - 180/81 = ( - 162/81 ) = ( - 2 )
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Ответ минус 2

1 votes Thanks 2

MoveZ 1) (1/9)2=1/81
2) 18*1/81=18/81
3) 20*1/9=20/9
4) 18/81-20/9= 18/81-180/81=-162/81=-2

1 votes Thanks 2

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