\(2010-2000:\left[486-2\left(7^2-6\right)\right]\)
\(=2010-2000:\left[486-2\left(49-6\right)\right]\)
\(=2010-2000:\left(486-2\cdot43\right)\)
\(=2010-2000:\left(486-86\right)\)
\(=2010-2000:400\)
\(=2010-5\)
\(=2005\)
`2010-2000:[486-2(7^2-6)]`
`=2010-2000:[486-2.(49-6)]`
`=2010-2000:(486-2.43)`
`=2010-2000:(486-86)`
`=2010-2000:400`
`=2010-5=2005`
2010 - 2000:[486 - 2(7^2 -6)
=2010-2000:[486 -2(49 -6) ]
=2010 - 2000 :[486 - 2.43]
=2010 - 2000 : [486 - 86 ]
=2010 - 2000 : 400
= 2010 - 5
=2005
2010 - 2000 : [486 - 2(72 - 6)]
=> 2010 - 2000 : [486 - 2(49 - 6)]
=> 2010 - 2000 : [486 - 2 . 43]
=> 2010 - 2000 : [486 - 86]
=> 2010 - 2000 : 400
=> 2010 - 5
=> 2005
# Học tốt #
Ta có: \(2010-2000:\left[486-2\left(7^2-6\right)\right]\)
\(=2010-2000:\left(486-2\cdot43\right)\)
\(=2010-2000:400\)
\(=2005\)
2010−2000:[486−2(72−6)]2010−2000:[486−2(72−6)]
=2010−2000:[486−2(49−6)]=2010−2000:[486−2(49−6)]
=2010−2000:(486−2⋅43)=2010−2000:(486−2⋅43)
=2010−2000:(486−86)=2010−2000:(486−86)
=2010−2000:400=2010−2000:400
=2010−5=2010−5
=2005
\(2010-2000:\left[486-2.\left(7^2-6\right)\right]\)
\(=2010-2000:\left[486-2.\left(49-6\right)\right]\)
\(=2010-2000:\left[486-2.43\right]\)
\(=2010-2000:\left[486-86\right]\)
\(=2010-2000:400\)
\(=2010-5\)
\(=2005\)
