Question

tính

( - 12 ) . ( - 13 ) + 13 . ( - 29 )

Answer 1

( -12 ). (-13 ) +13.( -29)

= 156 + 13.(-29)

=156+(-377)

= -221

Answer 2

(-12)(-13)+13(-29)

=156+(-377)

=156-377

=-221

Answer 3

(-12).(-13)+13.(-29)

=12.13+13.(-29)

=13.(12-29)

=13.-17

=-221

Answer 4

 ( -12) . ( -13) + 13 . ( -29 )

= 12 . 13 + 13 . ( -29 )

= 13 . [ 12 + ( -29 ) ]

= 13 . ( -17 )

= -221