Răspuns :
(7^2-3^2)÷2^3+[(3+2×3)^2-15^0]÷(2^2×5) =
= (49-9):8 + [(3+6)^2-1] : (4x5) =
= 40:8 + (9^2-1) : 20 =
= 5 + (81-1):20 =
= 5 + 80:20 =
= 5 + 4 =
= 9
= (49-9):8 + [(3+6)^2-1] : (4x5) =
= 40:8 + (9^2-1) : 20 =
= 5 + (81-1):20 =
= 5 + 80:20 =
= 5 + 4 =
= 9