Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(a,5:5^2+2^3.3^2\)
\(=5^4+72\)
\(=697\)
\(b,8^3.25-8^3.23\)
\(=8^3.\left(25-23\right)\)
\(=8^3.2\)
\(=1024\)
\(c,80-\left(4.5^2-3^2.2^3\right)\)
\(=80-\left(100-72\right)\)
\(=80-28\)
\(=52\)
\(d,\left(12^4-6^4+2.3^4\right):3^4\)
\(=\left(20736-1296+162\right):3^4\)
\(=19602:3^4\)
\(=242\)
\(a,5:5^2+2^3.3^2\)
\(=5+72\)
\(=77\)
\(b,8^3.25-8^3.23\)
\(=8^3.\left(25-23\right)\)
\(=8^3.2\)
\(=1024\)
\(c,80-\left(4.5^2-3^2.2^3\right)\)
\(=80-\left(100-72\right)\)
\(=80-28\)
\(=52\)
\(d,\left(12^4-6^4+2.3^4\right):3^4\)
\(=\left(20736-1296+162\right):3^4\)
\(=19602:3^4\)
\(=242\)
#)Giải :
a)\(9^2\div\left(27^3.81^2\right)=9^2\div\left[\left(3^3\right)^3.\left(9^2\right)^2\right]=9^2\div\left(3^9.9^4\right)\)
Tự lm típ
a,\(9^2:\left(27^3.81^2\right)=3^4:\left(3^9.3^8\right)=3^4:\left(3^{9+8}\right)=3^4:3^{17}=3^{-13}\)
mời bạn đừng thi thì tốt hơn 
72-36:32
=49-36:9
=49-4
=45
70-[60-(12-8)2]
=70-(60-42)
=70-(60-16)
=70-44
=26
24.5-[131-(13-4)2]
=16.5-(131-92)
=16.5-(131-81)
=16.5-50
=80-50
=30
a) 123.42 -39.33=123.16 - 39.27 = 915
b) 53 . 48 + 53 . 22 = 53 . ( 48 + 22) = 125 . 70 = 8750
c) 815 : 813 + 39 : 36 = 82 + 33 = 64 + 27 = 91
d) 53 . 49 + 53 . 51 - 128 = 53 . ( 49 + 51 ) -128 = 5300-128 = 5172
a,113-3+20
=1328+20
=1348
b,300+7781+1425
=9506
c,7+36-40
=43-40=3
a,
115 : 112 - 33 : ( 11 + 23 ) + 22 x 30 x 5
= 11( 5 - 2 ) - 27 : ( 1 + 8 ) + 4 x 1 x 5
= 113 - 27 : 9 + 4 x 5
= 1331 - 3 + 20
= 1328 + 20
= 1348
b,
12 x 25 + 31 x 251 + 57x 25
= 12 x 25 + 57 x 25 + 31 x 251
= ( 12 + 57 ) x 25 + 31 x 251
= 69 x 25 + 31 x 251
= 1725 + 7781
= 9506
c,
15 - 23 + 4 x 32 - 5 x 8
= 15 - 8 + 4 x 9 - 40
= 15 - 8 + 36 - 40
= 7 + 36 - 40
= 43 - 40
= 3
1) 15.9^3 : 27 - 6^2.12 +18.41
= 15.729 : 27 - 36.12 +738
= 10935 : 27 - 432 + 738
= 405 - 432 + 738
= 711
2) 18.7^3 + 9.2^6 :8 - 12.7
= 18.343 + 9.64 :8 - 84
= 6174 + 72 - 84
= 6162
3) 23.2^5 + 288.4^2 :12
= 23.32 + 288.16 :12
= 736 + 384
= 1120
4) 12^2 : 36 + 8^2 : 4 - 5.3
= 144 : 36 + 64 : 4 - 15
= 4 + 16 - 15
= 5