Question

xla 2totul supra 0,2(3)=4intregi și 2 pa7

Answer 1

0,2(3) = (23 - 2)/90 = 21/90 = 7/30

4 intregi 2/7 = (4 × 7 + 2)/7 = 30/7

x^2/(7/30) = 30/7

30x^2/7 = 30/7

7 × 30x^2 = 7 × 30 | : (7 × 30)

x^2 = 1

x = 1
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Answer 2

0,2( 3 ) = ( 23 - 2 ) / 90 = 21 / 90 = 7 / 30

4 intregi si 2 / 7 = ( 4 x 7 + 2 ) / 7 = 30 / 7

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x² : 7 / 30 = 30 / 7

x² = 30 / 7  ×   7 / 30

x² = ( 30 / 30 ) ×  ( 7 / 7 )

x² = 1

x = √1

x = 1