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Completează:
a) 4×3⁶ + 7×3⁷ = ( )²;
b) 4×5²⁰+9×5²¹=( )² ;
c) 2¹⁰ +3×2¹⁰+ 5×4⁵ = ( )²


Completeazăa 43 73 B 4595 C 2 32 54 class=