Question

Tính bằng hai cách :

 \(\left(9,6-4,2\right)\cdot3,6\)

Answer 1

Cách 1:

\(\left(9,6-4,2\right)\times3,6\)

\(=5,4\times3,6\)

\(=19,44\)

Cách 2:

\(\left(9,6-4,2\right)\times3,6\)

\(=9,6\times3,6-4,2\times3,6\)

\(=34,56-15,12\)

\(=19,44\)

Answer 2

re the ma ko biet lam

Answer 3

cách 1

\(\left(9,6-4,2\right)3,6\)

\(=5,4.3,6\)

\(=19,44\)

cách 2

\(\left(9,6-4,2\right)3,6\)

\(=3,6.9,6-3,6.4,2\)

\(=34,56-15,12\)

\(=19,44\)