Răspuns :
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Răspuns
Explicație pas cu pas:
( 7 / 2 - 7 / 5 )² x 2 / 7 =
= ( 35 / 10 - 14 / 10 )² x 2 / 7 =
= ( 21 / 10 )² x 2 / 7 =
= 21² / 10² x 2 / 7 =
= (3² x 7² ) / 7 x 2 / (2² x 5²) =
= ( 9 x 7 ) x 1 / ( 2 x 25 ) =
= 63 / 50 =
= 1,26