(–4) . (+125) . (–25) . (–6) . (–8)

= [(–4) . (–25)] . [(+125) . (–8)] . (–6)

= (4 . 25) . [–(125 . 8)] . (–6)

= 100 . (–1000) . (–6)

= 100 . 1000 . 6 = 600 000

5+ 5 + 5 + 5+ 5 + 5 +5+ 5 + 5 +5=5x10=50

25 + 25 + 25 + 25 + 25 + 25 +25 + 25=25x8=200

45 + 45 + 45 + 45 + 15 + 15 + 15 + 15=(45x4)+(15x4)=180+60=240

5+ 5 + 5 + 5+ 5 + 5 +5+ 5 + 5 +5
= 5 x 10
= 50

25 + 25 + 25 + 25 + 25 + 25 +25 + 25
= 25 x 8
= 200

45 + 45 + 45 + 45 + 15 + 15 + 15 + 15
= 45 x 4 + 15 x 4
= 180 + 60
= 240

2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18
= (2 + 18) + (4 + 16) + (8 + 12) + (6 + 14) + 10
= 20 + 20 + 20 + 20 + 10 
= 20 x 4 + 10
= 80 + 10
= 90 

125 + 125 + 125 + 125 - 25 - 25 - 25 - 25 
= 4 x (125 - 25) 
= 4 x 100 
= 400
(Tick cho mk pls ^^)

= ((-4)x(-25))x(125x(-8))x(-6)

= 100          x -1000    x -6

=           -100000 x -6

= -600000

quên , = 600000

=(-4).(-25).(-8).125.(-6)  

 = 100 . -1000 . (-6)

= -100000 . (-6)

=600000

a, ( -4 ).125.( -25 ).( -8 ).( -6 )

= [ ( -4 ).( -25 ) ].[ 125.( -8 ) ].( -6 )

= 100.( -1000 ).( -6 )

= ( -100 000).( -6 )

= 600 000

b, ( -2 ).12.( -50 )

= [ ( -2 ).( -50 ) ].12

= 100.12 = 1200

c, ( -25 ).( - 26 ).( - 4 )

= [ ( -25 ).( -4 ) ].( - 26 )

= 100.( -26 ) = -2600

a) (-4) . 125 . (-25) . (-8) . (-6)

= (-4). (-25) . 125 . (-8) - (-6)

= 100 . (-1000) . (-6)

= -100000 . (-6)

=600000

b)(-2).12.(-50)

= (-2) . (-50) . 12

= 100 . 12

= 1200

a)\(\left(-4\right).125.\left(-25\right).\left(-6\right).\left(-8\right)\)

\(=\left[\left(-4\right)\cdot\left(-25\right)\right]\cdot\left[125\cdot\left(-8\right)\right]\cdot\left(-6\right)\)

\(=100\cdot\left(-1000\right)\cdot\left(-6\right)\)

\(=600000\)

b) \(\left(-98\right)\cdot\left(1-126\right)-126\cdot98\)

\(=\left(-98\right)\cdot1-\left(-98\right)\cdot126-126\cdot98\)

\(=\left(-98\right)+98\cdot126-126\cdot98\)

\(=\left(-98\right)\)

a)(-4).(125).(-25).(-6).(-8)                                              b) (-98).(1-246)-246.98

=((-4).(-25)).(125.-8).-6                                                 =(-98).(-245)-246.98

=100.-1000.6                                                              =24010-92708

=-600000                                                                   =-68698

 (-4).125(-25)(-6)(-8)

 = [ ( -4 ) . ( -25 ) ] . [ 125  . ( -8 ) ] . ( -6 )

=  100 . ( -1000 )  . ( -6 )

 = -100000 . ( -6 )

= 600000

(-4).125.(-25).(-6).(-8)

=4.25.8.125.(-6)

=100.1000.(-6)

=-600000

(-4).3.(-125).(-8)

=4.3.125.(-8)

=12.(-1000)

=-12000

(-98).(1-246)-246.98

=98.(246-1)-246.98

=98.(246-1-246)

=98.(-1)

=-98

(-67).(1-301)-301.67

=67.(301-1)-301.67

=67.(301-1-301)

=67.(-1)

=-67

Chúc bn làm tốt hen!