5 ⋮ n - 2

Nên n - 2 ∈ Ư(5) = {-1; 1; -5; 5}

Ta có bảng sau :

➤ n ∈ {1; 3; -3; 7}

Chữ story ở tóc,áo,sách của bà tóc xoăn

Chữ page ở quần+áo thằng bé

Chữ words trong cái cây

Chữ No ở ghế

Còn lại tịt...

Ta có:

0^2=0

1^2=1

2^2=4

3^2=9

4^2=16

5^2=25

6^2=36

7^2=49

8^2=64

9^2=81

10^2=100

1 + 19 + 12 + 8 + 13 + 7 + 14 + 5 + 15 + 6 

= ( 1 + 19 ) + ( 12 + 8 ) + ( 13 + 7 ) + ( 14 + 6 ) + ( 15 + 5 )

= 10 X 5 

= 50 

NHÉ !

=3 k nha

x + 5 + 6 = 90

x + 11 = 90

x = 90 - 11

x = 79

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaassssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssdddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddslhfalsdjfhjlshafdfklwajeuiwuriqjfhdlhsaiofioqwueirhwshdiiduiuejdssssssssssssssssssssssskkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkllllllllllllllllllllkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxcxxxxxxxxxxxooooooooooooooooooooooooooooooooooooooooooooooooooppppppppppppppppppppppppppppppppppppppppppppppppppaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwweeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeerrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooopppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

i) \(5^8:25^2=5^8:\left(5^2\right)^2=5^8:5^{2.2}=5^8:5^4=5^{8-4}=5^4\)

k) \(4^9:64^2=4^9:\left(4^3\right)^2=4^9:4^{3.2}=4^9:4^6=4^{9-6}=4^3\)

l) \(2^{25}:32^4=2^{25}:\left(2^5\right)^4=2^{25}:2^{5.4}=2^{25}:2^{20}=2^{25-20}=2^5\)

m) \(125^3:25^4=\left(5^3\right)^3:\left(5^2\right)^4=5^{3.3}:5^{2.4}=5^9:5^8=5\)