Question

calculi cu puteri
efectuati
l)4la5x42:(4la2)tot la 3=
m)(6la4)tot la5:6la18=
n)(3la2)tot la 4:(3la4) =
o)5x5la2x5la3x5la4:5la10
p)3la123x3la455:3la456:3la120=
q)9la23x9la7x(9la2)tot la10:9la49=
r)(599la995+344la433)tot la0=
s) (81:3)tot la2=
t) [(3la3)tot la12:3la 2la5-56]:5=
u) (2la4)tot la4:2 la2 la4x(3la2-1)-2005la0x2la 2

Answer 1

[tex]s) (81:3)^2 =(9*9:3)^2 = (3^2*3^2:3)^2 = (3^3)^2=3^6=729 [/tex]

[tex](2^4)^4:(2^2)^4*(3^2-1)-2005^0*2^2=2^1^6:2^8*(3^2-1)-1*2^2 =2^8*2^3-2^2=2^1^1-2^2=2^2*(2^9-1)=4*(512-1)=4*511 =2044[/tex]