2010-2000:(ngoặc vuông)486-2(7^2-6)
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\(2010-2000:\left[486-2\left(7^2-6\right)\right]\)
\(=2010-2000:\left[486-2\left(49-6\right)\right]\)
\(=2010-2000:\left(486-2\cdot43\right)\)
\(=2010-2000:\left(486-86\right)\)
\(=2010-2000:400\)
\(=2010-5\)
\(=2005\)
`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`
\(2010-2000:\left[486-2\left(7^2-6\right)\right]\)
\(=2010-2000:\left[486-2\left(49-6\right)\right]\)
\(=2010-2000:\left[486-2.43\right]\)
\(=2010-2000:\left[486-86\right]\)
\(=2010-2000:400\)
\(=2010-5\)
\(=2005\)
a: \(=2011+5\cdot\left[300-10^2\right]\)
\(=2011+5\cdot200\)
=1011
b: \(=695-\left[200+10^2\right]\)
=695-300
=395
a) =2011+5.200
=3011
b)=695-300
=395
c)1=29-5.4
=109
d)=2010-2000:400
=2010-5
=2005
Cách 1 :
2010 - 2000/486 - 2(7^2 x 6)
= 5/51
Cách 2 :
2010 - 2000/486 - 2 ( 7^2 x 6 )
= 2029 , 607 843 137 25
k cho mk nha
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.
2010-2000:\([\)486-2(72-6)\(]\)=2010-2000:\([\)486-86\(]\)
=2010-2000:400
=2010-5=2005
\(2010-2000:\left[486-2.\left(7^2-6\right)\right]\)
\(=2010-2000:\left[486-2.\left(49-6\right)\right]\)
\(=2010-2000:\left[486-2.43\right]\)
\(=2010-2000:\left[486-86\right]\)
\(=2010-2000:400\)
\(=2010-5\)
\(=2005\)
\(500-\left\{5.\left[409-\left(2^3:3-21\right)^2\right]+10^3\right\}.15\)
\(=500-\left\{5.\left[409-\left(8:3-21\right)^2\right]+10^3\right\}.15\)
\(=500-\left\{5.\left[409-\left(\frac{8}{3}-21\right)^2\right]+10^3\right\}.15\)
\(=500-\left\{5.\left[409-\frac{-55}{3}\right]+1000\right\}.15\)
\(=500-\left\{5.\left(\frac{1282}{3}\right)+1000\right\}.15\)
\(=500-\left\{\frac{6410}{3}+1000\right\}.15\)
\(=500-\frac{9410}{3}.15\)
\(=500-47050\)
\(=-46550\)
a) 8697-(37:35+2(13-3)
=8697-(32+2.13-2.3)
=8697-(9+26-6)
=8697-29
=8668
b) 2010-2000:(486-2(72-6))
=2010-2000:(486-(2.49-2.6))
=2010-2000:(486-(98-12)
=2010-2000:400
=2010-5
=2005
c)718:716+22.33.32.5-22.7+83
=(718:716)+(22.33.32)-(22.7)+83
=49+972-28+83
=1076
nhớ tích nha bạn ^-^
\(2010-2000:\left[486-2\left(7^2-6\right)\right]\)
=2010-2000:[486-2*43]
=2010-2000:400
=2010-5=2005
rồi câu cuối là có ngoặc vuông nha các bn