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(1990+1990^2):(1990^0+1990^1)

Răspuns :

( 1990 + 1990² ) : ( 1990⁰ + 1990¹ ) = 1990

= 1990 x ( 1 + 1990 ) : ( 1 + 1990 ) =

= 1990 x 1991 : 1991 =

= 1990