football chứ k phải foodball bạn nhé

a. Ta có: 
24 = 2³ . 3
10 = 2 . 5
BCNN (24,10) = 2³. 3 . 5 = 120
BC (24,10) = B (120) = {0; 120; 240; 360; 480; 600; ....}

Bạn dựa vào câu a) làm những câu còn lại nhé!

Tìm x, y ∈ Z biết
a) (x + 1)(y – 2) = 0

b) (x – 5)(y – 7) = 1

c) (x + 4)(y – 2) = 2 

d) (x + 3)(y – 6) = -4

e) (x + 7)(5 – y) = -6

f) (12 – x)(6 – y) = -2

mk cần gấp, giúp với nhé, mk sẽ tick cho ai làm sớm ^^

Tính nhanh:
e) (-8).(2).25.(-50).(-4)

Tìm x, y ∈ Z biết.
a) (x + 1)(y – 2) = 0 
b) (x – 5)(y – 7) = 1 
​c) (x + 4)(y – 2) = 2 
​d) (x + 3)(y – 6) = -4
e) (x + 7)(5 – y) = -6
f) (12 – x)(6 – y) = -2

V. Complete the email. Write ONE word for each space.

Dear Sam, Thanks very much (1) ___________ your email. It was good (2) __________ hear from you again.

So, you want to know (3) ______________ my school. Well, it has more (4) ______________ 1000 students and the buildings (5) ______________ very large. I got lost a few times at (6) ______________ beginning of term!

The students (7) ______________ my class are very friendly and most (8) ______________ the teachers are not too strict.

(9) __________ are many clubs to go to after school, so I joined the volleyball (10) __________ the art club.

See you soon,

Ted