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128 - [68 + 8(37 - 35)2 ] : 4
= 128 - [68 + 8.22 ] : 4
= 128 - [68 + 32] : 4
= 128 - 100 : 4
= 128 - 25
= 103
\(128.\left[68+8\left(37-35\right)^2\right]\)
\(=128\left[68+8.2^2\right]\)
\(=128\left[68+32\right]\)
\(=128.100\)
\(=12800\)
128[68+8(37-35)^2]
=128[68+8.2^2]
=128[68+8.4]
=128[68+32]
=128.100
=12800
a , 2014+(-1999)+1986+175+(-2001) = (2014+1986)+(-1999+-2001)+175
= 4000 + -4000 +175
= 175
roi tu lam nhe minh ban roi phai day
nice to meet you
\(a.3.52+15.22-26:2\\ 156+330-13\\ =486-13\\ =473\)
\(b.53.2-100:4+23.5\\ =106-25+115\\ =81+115\\ =196\)
A)3.52+15.22-26:2
= 3.25+15x4-26:2
= 75+60-13
=122
B)52.9+50.2-33.3
=125.2-25+8
=225+40.
=265
C)62:9+50.2-33.3
=36:9+100-27.3
=7+100-81
=7+19
= 26
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(-12).32+240:(-2)2=(-12).9+240:4=(-108)+60= -48
a) 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
b) 2345 - 1000 : [19 - 2(21 - 18)2 ]
= 2345 - 1000 : [19 - 2 . 32 ]
= 2345 - 1000 : [19 - 18]
= 2345 - 1000 : 1
= 2345 - 1000
= 1345
c) 128 - [68 + 8(37 - 35)2 ] : 4
= 128 - [68 + 8 . 22 ] : 4
= 128 - [68 + 32 ] : 4
= 128 - 100 : 4
= 128 - 25
= 103
d) 568 - {5[143 - (4 - 1)2 ] + 10} : 10
= 568 - {5[143 - 9 ] + 10} : 10
= 568 - {5 . 134 + 10 } : 10
= 658 - {670 + 10 } : 10
= 658 - 680 : 10
= 658 - 68
= 590
1)2345 - 1000 : [19 - 2(21 - 18)2]
=2345 - 1000 : [19 - 2 . 32]
=2345 - 1000 : 1
=2345 - 1000
=1345
Lời giải:
$128-[68+8(37-35)^2]:4=128-(68+8.2^2):4$
$=128-100:4=128-25=103$
Nubacachi