Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(=100-4\times25-3\times2^3\)
\(=100-100+3\times8\)
\(=0+24\)
\(=24\)
a)17.85-15.17-120
=17.(85-17)-120
=17.68-12
=1156-120
=1036
b)100:[30-(6-1)^ 2]
=100 :[30-5^ 2]
= 100:[30-25]
=100:5=20
c)/-10/+4+3.2^3+(-14)
=10+4+3.8 +(-14)
=14+24+(-14)
=[14 +(-14)]+24
=0+24=24
d)20-[30-(5-1)^ 2: 2]
=20-[30-4^2:2]
=20-[30-8]
=20-22=-2
e)80-(4.5^2-3.2^3)
= 80-(4.25-3.8)
=80-(4.25-3.2.4)
=80-4.(25-3.2)
= 80-4.19
= 80-76=4
g)35-{12-[-14+6-2)]}
=35 -{12-14-6+2}
=35-12+14+6-2
=23+14+6-2
=37+6-2
=43-2=41
5.42 - 18 : 32 . 22+2.115 = 5 .24 - 2.32:32.22+2
= 5 . 24 - 23 + 2
= 5 . 10 = 50
80- (4.52-3.23) = 24 . 5 - 22 .52 + 3 .23
= 22 ( 22 .5-5+ 3.2)
= 4 . 21 = 84
a.\(4.5^2-3.2^3+3^3:3^2=4\left(5^2-3.2\right)+3=4.19+3=79\)
b.\(28.76+24.28-28.20=28\left(76+24-20\right)=28.80=2240\)
\(80-\left(4.5^2.3.2^2\right)\)
\(=80-\left(4.5.5.3.2.2\right)\)
\(=80-\left(\left[5.2\right].\left[5.2\right].\left[4.3\right]\right)\)
\(=80-\left(10.10.12\right)\)
\(=80-\left(10.120\right)\)
\(=80-1200\)
\(=-1120\)
80-[4.5^2 .3.2^2 ]
=80-[4.25.3.4]
=80-[100.12]
=80-1200=-1120
a) 4.52-3.23 = 22.52-3.23 = 22.(52-3.2) =22.(25-6) = 4.19 = 76
b) 28.76 + 13.28 + 9.2
= 28. (76 + 13) + 18
= 28. 89 + 18
= 2492 + 18
= 2510
c) 1024: ( 17 .25+15.25)
= 210 : [25.(17+15)]
= 210: [25. 32]
= 210: [25.25)
= 210:210
= 1
a) 4.52-3.23
=22.52-3.23
=22.(25-6)
=4.11
=44
b) 28.76+13.28+9.2
=28.(76+13)+9.2
=28.89+9.2
=2.(1246+9)
=2.1255
=2510
c) 1024:(17.25+15.25)
=1024:25.(17+15)
=1024:32.32
=1
\(80-\left(4.5^2-3.2^3\right)=2^{10}-\left(x-4\right)\) )
=> \(80-\left[2^2\left(5^2-3.2\right)\right]=2^{10}-x+4\)
=> \(80-\left[2^2\left(25-6\right)\right]=2^{10}-x+4\)
=> \(80-\left(4.19\right)=2^{10}-x+4\)
=> \(80-76-4=2^{10}-x\)
=> \(2^{10}-x=0\)
=> \(x=1024\)