Question

Efectuati: 1 întreg 1/3*x-0,(4)=(-2/3)^2.

Va rog ajutor cat de repede.

Answer 1

1 intreg 1 / 3 = ( 1 × 3 + 1) / 3 = 4 /3

4/3 × x - 0,(4) = ( - 2 / 3)^2

( - )^2 = ( - ) × ( - ) = ( + )

4x / 3 - 4 / 9 = 2^2 / 3^2

4x / 3 - 4 / 9 = 4 / 9

4x / 3 = 4 / 9 + 4 / 9

4x / 3 = 8 / 9

4x = 8 × 3 : 9

4x = 8 / 3

x = 8 / 3 × 1 / 4

x = 8 / 12

x = 2 / 3

x = 0 , (6)
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