Question

Calculează: {8+2• [9 + 9• (7 + 2•3)]}• 2-4•23.​

Answer 1

Răspuns:

{8+2×[9+9×(7+6)]}×2-92=

[8+2×(9+9×13)]×2-92=

[8+2×(9+117)]×2-92=

(8+2×126)×2-92=

(8+252)×2-92=

260×2-92=

520-92=428

Answer 2

Explicație pas cu pas:

ღSalutare!ღ

{8+2×[9+9×(7+2×3)]}×2-4×23=

={8+2×[9+9×(7+6)]}×2-92=

=[8+2×(9+9×13)]×2-92=

=[8+2×(9+117)]×2-92=

=(8+2×126)×2-92=

=(8+252)×2-92=

=260×2-92=

=520-92=

=428

Succes!!;)