Calculati media aritmetica a numerelor:
a=((-4)²)⁶ : (-4)la puterea a 8-a : 2 la puterea a 3-a
b=(-7) la puterea a 5-a X (-7) la puterea a 12-a : [(-7)la puterea a 3-a]la puterea a 5-a+13
c=1-2+3-4+5-6+……+19-20.
Multumesc anticipat.
Ryanuser (0)
[tex]\rm{a=4^{12}:4^8:2^3=4^{12-8-3}=4 ;\\
b=-7^5\cdot7^{12}:(-7^3)= 7^{5+12-3} = 7^{14} ;\\
c = -2-4-6-…-20) … 10 termeni !\\
\underline{1+3+5+…+19} … 10 termeni !\\
-1-1-1-…- 1 = 10 \cdot(-1)= -10
multumesc🙂