29 . ( 19 - 13 ) - 19 . ( 29 - 13 )
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![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
=29.19-29.13-19.29+19.13
=-29.13+19.13
=13.(-29+19)
=13.(-100
=-130
tk mk nha
ai tk mk
mk tk lai
![](https://rs.olm.vn/images/avt/0.png?1311)
29.(19-13).19.(29-13)
=[(29.19)-(29.13)].[(19.29)-(19.13)]
=[551-377].[551-247]
=174.304
=52896
29 . (19-13) . 19 . ( 29 - 13)
= 29 . 6 . 19 . 16
= 174 . 304
= 52896
tk ủng hộ nha
![](https://rs.olm.vn/images/avt/0.png?1311)
Cách 1: 29 . (19 – 13) – 19 . (29 – 13) = 29 . 6 – 19 . 16 = 174 – 304 = –130.
Cách 2: 29 . (19 – 13) – 19 . (29 – 13)
= 29 . 19 – 29 . 13 – (19 . 29 – 19 . 13)
= 29 . 19 – 29 . 13 – 19 . 29 + 19 . 13
=(29 . 19 - 19 . 29) + (19 . 13 - 29 . 13)
= 13 . (19 – 29) = 13 . (–10) = –130.
![](https://rs.olm.vn/images/avt/0.png?1311)
\(29x\left(19-13\right)-19x\left(29-13\right)\)
\(=29x19-29x13-19x29-19x13\)
\(=\left(29x19-19x29\right)-\left(29x13-19x13\right)\)
\(=0-13x\left(29-19\right)\)
\(=0-13x10=-130\)
![](https://rs.olm.vn/images/avt/0.png?1311)
29 . ( 19 - 13 ) - 19 . ( 29 - 13 )
= 29 . 19 - 29 . 13 - 19 . 29 - 19 . 13
= ( 29 . 19 . 29 - 19 ) . [ - 29 . 13 - ( - 19 . 13 ) ]
= 0 . [ - 29 . 13 + 19 . 13 ]
= 0 . ( - 10 ) . 13
= - 10 . 13
= - 130
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
29. (19-13) - 19( 29-13)
= 29.19 - 13.29 - 19.29 - 13.19
= 29( 19-19) - 13.29 - 13.19
= 0 - 13. (29-19)
= 0- 13.10
= 0 -130
= -130
![](https://rs.olm.vn/images/avt/0.png?1311)
29(19-13) - 19(29-13)
=29.19-29.13 - 19.29+19.13
=(29.19-19.29)-(29.13-19.13)
=0-13.(29-19)
=-13.10
=-130
![](https://rs.olm.vn/images/avt/0.png?1311)
29.(19 - 13) - 19.(19 - 13)
= 29.6 - 19.6
= 6.(29 - 19)
= 6.10
= 60
29 . (19 - 13 ) - 19 . ( 29 - 13 )
=29 . 6 - 19 . 16
=174 - 304
=130