Question

Va rog repede,dau coroana.​

Answer 1

Răspuns:

Explicație pas cu pas:

0,2(6) = (26 - 2)/90 = 24/90

1,8 = 18/10

18/10*24/90 = 48/100

√(48/100) = 4√3/10 = 2√3/5

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2,25 = 225/100 = 9/4

0,(3) = 3/9 = 1/3

9/4*1/3 = 3/4

√(3/4) = √3/2

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2√3/5 - √3/2 = 4√3/10 - 5√3/10 = -√3/10

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I-√3/10I = √3/10

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√3/10*10√3 = 3 ∈ Z