#191
1) ( 3^2 + 2^3 * 5 ) : 7
= ( 9 + 8 * 5 ) : 7
= ( 9 + 40 ) : 7
= 49 : 7
= 7
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2) 47 - [(45 * 2^4 - 5^2 * 12 ) : 14 ]
= 47 - [( 45 * 16 - 25 * 12 ) : 14 ]
= 47 - [( 720 - 300 ) : 14 ]
= 47 - ( 420 : 14 )
= 47 - 30
= 17
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3) 50 - [( 20 - 2^3 ) : 2 + 34 ]
= 50 - [( 20 - 8 ) : 2 + 34 ]
= 50 - ( 12 : 2 + 34 )
= 50 - ( 6 + 34 )
= 50 - 40
= 10
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4) 10^2 - [ 60 : ( 5^6 : 5^4 - 3 * 5 )]
= 100 - [ 60 : ( 5^(6-4) - 15 )]
= 100 - [ 60 : ( 5^2 -15 )]
= 100 - [ 60 : ( 25 - 15 )]
= 100 - ( 60 - 10 )
= 100 - 50
= 50
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5) 50 - [( 50 - 2^3 * 5 ) : 2 + 3 ]
= 50 - [( 50 - 8 * 5 ) : 2 + 3 ]
= 50 - [( 50 - 40 ) : 2 + 3]
= 50 - ( 10 : 2 + 3 )
= 50 - ( 5 + 3)
= 50 - 8
= 42
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6) 10 - [( 8^2 - 48 ) * 5 + ( 2^3 * 10 + 8 )] : 28
= 10 - [ 16 * 5 + ( 8 * 10 + 8 )] : 28
= 10 - [ 80 + ( 80 + 8 )] : 28
= 10 - ( 80 + 88 ) : 28
= 10 - 168 : 28
= 10 - 6
= 4
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7) 8697 - [ 3^7 : 3^5 + 2 ( 13 - 3 )]
= 8697 - ( 3^(7-5) + 2 * 10 )
= 8697 - ( 3^2 + 20 )
= 8697 - ( 9 + 20 )
= 8697 - 29
= 8668
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8) 2011 + 5 [ 300 - ( 17 - 7 )^2 ]
= 2011 + 5 ( 300 - 10^2 )
= 2011 + 5 ( 300 - 100 )
= 2011 + 5 * 200
= 2011 + 1000
= 3011
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9) 695 - [ 200 + ( 11 - 1 )^2 ]
= 695 - ( 200 + 10^2 )
= 695 - ( 200 + 100 )
= 695 - 300
= 395
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10) Bỏ
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11) 295 - ( 31 - 2^2 * 5 )^2
= 295 - ( 31 - 4 * 5 )^2
= 295 - ( 31 - 20 )^2
= 295 - 11^2
= 295 - 121
= 174
@TGN
