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\(A=1024:\left(17.2^5+15.2^5\right)\)
\(=1024:\left[2^5.\left(17+15\right)\right]\)
\(=1024:\left[32.32\right]\)
\(=1\)
\(A=\frac{1024}{17.2^5+15.2^5}=\frac{1024}{2^5.\left(17+15\right)}=\frac{1024}{32.32}=\frac{1024}{1024}=1\)
\(a)\frac{1024}{17\cdot2^5+15\cdot2^5}=\frac{1024}{(17+15)\cdot2^5}=\frac{1024}{32\cdot32}=\frac{1024}{1024}=1\)
\(b)2^2\cdot102-2^3\cdot17-2^2\cdot34=2^2\cdot(102-34)-2^3\cdot17\)
\(=4\cdot68-8\cdot17\)
\(=272-136=136\)
Chúc bạn học tốt :>>
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
\(5^2-\left(5.3^3-4.2^3\right).19=25-\left(135-32\right).19=25-103.19=25-1957=-1932\)
\(215-\left(5^2.2^3+700\right):3^2=215-\left(200+700\right):3^2=215-900:9=215-100=115\)
\(16.25+2^4.75=400+1200=1600\)
\(15.2^3+4.3^2-5.7=120+36-35=121\)
a, 3.5^2+15.2^2-26:2
=3.25+15.4-13
=75+60-13
=135-13
=122
b, 5^3.2-100:4+2^3.5
=125.2-25+8.5
=250-25+40
=225+40
=265
a)
204-84:12
=204-7
=197
b)
15.23+4.32-5.7
=15.8+4.9-5.7
=120+36-35
=156-35
=121
c)
56:53+23.22
=56-3+23+2
=53+25
=125+32
=157
d)
164.53+47.164
=(164.(53+47)
=164.100
=16400
tìm x:
219-7(x+1)=100
=>7(x+1)=219-100
=>7(x+1)=119
=>x+1=119:7
=>x+1=17
=>x=17-1
=>x=16
(3x-6).3=34
=>(3x-6).3=81
=>3x-6=81:3
=>3x-6=27
=>3x=27+6
=>3x=33
=>x=33:3
=>x=11
a,3.52 + 15.22 - 26:2
=3.25 + 15.4 -26:2
=75+60-13
=122
b,53.2 - 100:4 + 23.5
=125.2 - 100:4 + 8.5
=250 - 25 +40
=265
c,62:9 + 50.2 - 33.3
=36:9 + 50.2 -27.3
=4 + 100 -81
=23
d,32.5 + 23.10 - 81:3
=9.5 +8.10 - 81:3
=45 + 80 -27
=98
e,513:510 - 25.22
=53 - 25.4
=125 - 100
=25
a) 3.52 + 15.22 - 26:2
=3.25 + 15.4 - 13
=75 + 60 -13
=117
b) 53.2 - 100:4 +23.5
=125.2 -25 + 8.5
=250 - 25 + 40
=265
c)62 : 9 + 50.2 - 33.3
=36:9 + 100 - 37.3
=4 + 100 - 81
=23
d)32.5 + 23.10 - 81:3
=9.5 + 8.10 - 27
=45 + 80 - 27
=98
e)513 : 510 - 25.22
=53 - 25.4
=125 - 100
=25
K NHA
=-7
\(17.2^5-2^4.10-2^3.4=17.32-16.10-8.4\)
\(=544-160-32\)
\(=352\)
_Học tốt nha_
=17.25-24.10-23.22
=17.25-24.10-25
=17.25-24.10
=(25.24)-(17-10)
=29-7
=512-7
=505
a/ 25.85+15.25=25(85+25)=25.110=2750
b/ 2048 : (17.2^5 +15. 2^5)= 2048 : [2^5 ( 17+15)]=2048 : ( 32. 32) = 2048 : 1024 = 2