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ta có : \(8^{200}=\left(2^3\right)^{200}=2^{600}\)
mà \(2^{800}>2^{600}\)
hay\(2^{800}>8^{200}\)
nhớ k cho mình nhé ^^
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x + 280 + 720 + 200 = 200 +800 -0
x + 1200 = 1000
x = 1000 - 1200
x = -200
vậy x= -200
x+280+720+200=200+800-0
x+280+720+200=1000
x+280+720=1000-200
x+280+720=800
x+280=800-720
x-280=80
x=80-280
x=-200
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x + 100 = 50 x 2 + 100 - 100 + 200 - 800 + 1 000
x + 100 = 100 + 100 - 100 + 200 - 800 + 1 000
x + 100 = 100 + 200 - 800 + 1 000
x + 100 = ( -500) + 1 000
x + 100 = 500
x = 500 - 100
x = 400.
x+100=50.2+100-100+200-800+1000
x+100=100+100-100+200-800+1000
x+100=200-100+200-800+1000
x+100=100+200-800+1000
x+100=300-800+1000
x+100=-500+1000
x+100=500
x=500-100
x=400
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`a) 800 | 2`
`400 | 2`
`200 | 2`
`100 | 2`
`50 | 2`
`25 | 5`
`5 |5`
`1`
Vậy `800 = 2^5 . 5^2`
`3200 | 2`
`1600 | 2`
`800 | 2`
`400 | 2`
`200 | 2`
`100 | 2`
`50 | 2`
`25 | 5`
`5 | 5`
`1`
Vậy `3200 = 2^7 . 5^2`
200-800=-600
= -600 nha