Răspuns :
Răspuns:
(-2)³·3^4=648
Explicație pas cu pas:
folosimm formula (a^m)n=a^m·n
[(-2)^8·3]^6=(-2)^48·3^6
si mai folosim formula
a^m÷a^n=a^m-n
(-2)^48·3^6÷(-2)^45÷3^2=
=(-2)^3·3^4=
=(-8)·81=648
sper ca am fost de folos
[(-2)^8×3]^6 ÷ (-2)^45 ÷9=?
[tex]\it [(-2)^8\cdot3]^6 : (-2)^{45} :9 = (2^8\cdot3)^6 : (-2)^{45} :9 =(2^{48}\cdot3^6):(-2)^{45}:3^2 =\\ \\ =2^{48}:(-2)^{45}\cdot(3^6:3^2)=-2^3\cdot3^4 =-8\cdot81=-648[/tex]