15 ( 3)X XX X X3( 4 4) 3( 2)   3 3 ( 2)( 2 2 4)15 ( 3) 3X XX X...

3. - DE CUONG ON THI TOAN 8 HK1 CO DAP AN
Toán DE CUONG ON THI TOAN 8 HK1 CO DAP AN

3.15 ( 3)

x x

x x x

3( 4 4) 3( 2)

 

  

3 3 ( 2)( 2 2 4)

15 ( 3) 3

x x x x

( 2 )

 =

  

=

3( 2)

x

3

( 3) x 2

( 2 2 4)

x x x

  =

=