Вычислить:
[tex]( \frac{2}{3} \div 3 - 1) \times {1.5}^{2} - 0.25[/tex]
Объясните как решить!))
[tex]( \frac{2}{3} \div 3 - 1) \times {1.5}^{2} - 0.25[/tex]
Объясните как решить!))
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(2/3) :3 = (2/3)*(1/3) = 2/9
(2/9) - 1 = (2/9) - (9/9) = -7/9
1.5 = 3/2 ---> 1.5² = (3/2)*(3/2) = 9/4
(-7/9)*(9/4) = -7/4
(-7/4) - 0.25 = (-7/4) - (1/4) = -8/4 = -2