=2220 nha

555 + 555 + 555 + 555 = 555 * 4 = 2220

k nhé

555+555+555+555=2220

k nha

a, 888+88+8+8+8

b,555+55+55+55+55+55+55+55+55+5

a) 888+88+8+8+8

b) 555+55+55+55+55+55+55+55+55+5

             ~ Chúc bn học tốt!! ~

=5550 nha

555 x 3 + 555 x 8 - 555

= 555 x 3 + 555 x 8 - 555 x 1

= 555 x ( 3 + 8 - 1)

= 555 x 10

= 5550

=5550 nha

1+565-255+556-555+555= 867

tk mk nha fan nastu

1 + 565 - 255 + 556 - 555 + 555 = 867 nha

555+555=1110

666+666=1332

555+555=1110

666+666=1332

555 + 555 = 1110

666 + 666 = 1332

Học tốốt !!

333-222=111
111+444=555
555-555=0
0+666=666
hc tốttttttttttt

\(333-222=111\)

\(555-555=0\)

\(111+444=555\)

\(0+666=666\)

333-222=111
111+444=555
555-555=0
0+666=666
hc tốt nha em ^_^

trả lời

555^2<222^555

chúc bn 

hc tốt

#)Giải :

Ta có : \(555^{222}=555^{2.111}=\left(111.5\right)^{2.111}=5^2.111^{111}=25.111^{111}\)

            \(222^{555}=222^{5.111}=\left(111.2\right)^{5.111}=2^5.111^{111}=32.111^{111}\)

Vì \(25< 32\Rightarrow25.111^{111}< 32.111^{111}\Rightarrow555^{222}< 222^{555}\)

trả lời 

555^222<222^555

chúc bn 

hc tốt