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\(a)\frac{1024}{17\cdot2^5+15\cdot2^5}=\frac{1024}{(17+15)\cdot2^5}=\frac{1024}{32\cdot32}=\frac{1024}{1024}=1\)
\(b)2^2\cdot102-2^3\cdot17-2^2\cdot34=2^2\cdot(102-34)-2^3\cdot17\)
\(=4\cdot68-8\cdot17\)
\(=272-136=136\)
Chúc bạn học tốt :>>
A)
=36:4.3+2.25
=9.3+50
=27+50
=77
B)
=5.16-18:9
=80-2
=78
Ủng hộ nhé! Ngồi nãy giờ mà ko đc j cả huhu :(
\(a,42.9-555+9.58=378-555+552\)
\(=345\)
\(b,92:\left(5+2.\left(13-10\right)^2\right)=92:\left(5+2.9\right)\)
\(=92:\left(5+18\right)\)
\(=92:23\)
\(=4\)
\(c,5^9:5^6-4^2.4=125-64\)
\(=61\)
a) 42 . 9 - 555 + 9 . 58
= 378 - 555 + 522
= ( - 177 ) + 522
= 345
b) 92 : [ 5 + 2 . ( 13 - 10 )2 ]
= 92 : [ 5 + 2 . 32 ]
= 92 : [ 5 + 2 . 9 ]
= 92 : [ 5 + 18 ]
= 92 : 23
= 4
c) 59 : 56 - 42 . 4
= 53 - 43
= 125 - 64
= 61
a) 48. ( 19 + 115 ) + 134 . 52
= 48 . 134 + 134 . 52
= 134. ( 48 + 52 )
= 134 . 100
= 13400
b) 52 + 25 - 1
= 25 + 32 - 1
= 57 - 1
= 56
Hk tốt
a) 48 . 19 + 48 . 115 + 134 . 52 b) 56 : 54 + 23 . 22 - 12017
= 48 . ( 19 + 115 ) + 134 . 52 = 52 + 25 - 12017
= 48 . 134 + 134 . 52 = 25 + 32 - 1
= 134 . 100 = 56
= 13 400
\(a,5:5^2+2^3.3^2\)
\(=5^4+72\)
\(=697\)
\(b,8^3.25-8^3.23\)
\(=8^3.\left(25-23\right)\)
\(=8^3.2\)
\(=1024\)
\(c,80-\left(4.5^2-3^2.2^3\right)\)
\(=80-\left(100-72\right)\)
\(=80-28\)
\(=52\)
\(d,\left(12^4-6^4+2.3^4\right):3^4\)
\(=\left(20736-1296+162\right):3^4\)
\(=19602:3^4\)
\(=242\)
\(a,5:5^2+2^3.3^2\)
\(=5+72\)
\(=77\)
\(b,8^3.25-8^3.23\)
\(=8^3.\left(25-23\right)\)
\(=8^3.2\)
\(=1024\)
\(c,80-\left(4.5^2-3^2.2^3\right)\)
\(=80-\left(100-72\right)\)
\(=80-28\)
\(=52\)
\(d,\left(12^4-6^4+2.3^4\right):3^4\)
\(=\left(20736-1296+162\right):3^4\)
\(=19602:3^4\)
\(=242\)
a. 15 . 23 + 4 . 32 - 5 . 7
=15 . 8+4 . 9 - 5 . 7
= 120 + 36 - 35
= 120+1
= 121
1024:(26:25+42:4)
=1024 : ( 26-5+42-1 )
=1024 : ( 2+4 )
=1024:6 = 512/3
!!!!
\(1024:\left(2^6:2^5+4^2:4\right)\)
\(=1024:\left(2+4\right)\)
\(=1024:6\)
\(=170,6666667\)
tíc mình nha