Răspuns:
2^14
Explicație pas cu pas:
-4=-2^2=2^2
-8=-2^3
minus la o putere para e plus
minus la o putere impara este minus
[2^12×(-4)^5×(-8)^2]^2:(4^3)^9=
[2^12×(-2^2)^5×(-2^3)^2]^2:(2^6)^9=
[2^12×2^10×(-2^6)]^2:2^54=
(2^22×2^12)^2:2^54=
(2^34)^2:2^54=
2^68:2^54=
2^14
