(1,5Đ)A) A = 75 48 300B) B = 2 3 2 2C) C = 2 3 2 2 2884...

Câu 1.(1,5đ)

a) A =

75

48

300

b) B =

2

3 2 2

c) C =

2 3 2

2

288

4

4

4

a

a

a

a

a

2

2

; (

a

0;

a

4

)