Question

Найдите значение выражения 18×(дробь1/9)^2-20×1/9дробь

Answer 1

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

Answer 2

$18* (frac{1}{9})^{2} -20* frac{1}{9}$ = -2