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a) \(2^3.3^2=8.9=72\)
b) \(5^{10}:5^7=5^2=25\)
c) \(2^6:2=2^5=32\)
d) \(7^4:7^4=7^0=1\)
e) \(9^5:9^5=9^0=1\)
a) 23 = 8; 24 = 16; 25 = 32; 26 = 64; 27 = 128; 28 = 256; 29 = 512; 210 = 1024
b) 32 = 9; 33 = 27; 34 = 81; 35 = 243
c) 42 = 16; 43 = 64; 44 = 256
d) 52 = 25; 53 = 125; 54 = 625
c) 62 = 36; 63 = 216; 64 = 1296
a) 23 = 8; 24 = 16; 25 = 32; 26 = 64; 27 = 128; 28 = 256; 29 = 512; 210 = 1024
b) 32 = 9; 33 = 27; 34 = 81; 35 = 243
c) 42 = 16; 43 = 64; 44 = 256
d) 52 = 25; 53 = 125; 54 = 625
e) 62 = 36; 63 = 216; 64 = 1296
HT
(1981 x 1982 - 990) : (1980 x 1982 + 992)
=(1980 x 1982+1982 -990) : (1980 x 1982 +992)
=(1980 x 1982 + 992) : ( 1980 x 1982 + 992)
=1
B=[(45.79+45.21)]:90-5^2]:5+2^3 B=[(45.79+45.21):90-25]:5+8 B=[(45.(79+21):65]:13 B=[(45.100):65]:13 B=[4500:65]:13 B=4500:65:13
22 = 4; 23 = 8; 24 = 16; 25 = 32; 26 = 64
27 = 128; 28 = 256; 29 = 512; 210 = 1024
32 = 9; 33 = 27; 34 = 81; 35 = 243
42 = 16; 43 = 64; 44 = 256
52 = 25; 53 = 125; 54 = 625
a,\(5^3.2-100:4+2^3.5\)
= 125 . 2 - 25 + 8 . 5
= 250 - 25 + 40
= 265
b, \(6^2:9+50.2-3^3.3\)
= 36 : 9 + 100 - 27 . 3
= 4 + 100 - 81
= 23
Bài 1:
a) 02002 < 02023
b) 20220 = 20230
c) 549 < 5510
d) ( 4 + 5 )3 > 42 + 52
đ) 92 - 32 > ( 9 - 3 )2
Bài 2:
a) 32 x 43 - 32 + 333
= 9 x 64 - 9 + 333
= 576 - 9 + 333
= 567 + 333
= 900
b) 5 x 43 + 24 x 5 + 410
= 5 x 64 + 24 x 5 + 1
= 5 x ( 64 + 24 ) + 1
= 5 x 88 + 1
= 440 + 1
= 441
c) 23 x 42 + 32 x 5 - 40 x 12023
= 8 x 16 + 9 x 5 - 40 x 1
= 128 + 45 - 40
= 133
Bài 1 :
a) \(0^{2002}=0;0^{2023}=0\Rightarrow0^{2002}=0^{2023}\)
b) \(2022^0=1;2023^0=1\Rightarrow2022^0=2023^0\)
c) \(54^9< 55^9;55^9< 55^{10}\Rightarrow54^9< 55^{10}\)
d) \(\left(4+5\right)^3>\left(4+5\right)^2;\left(4+5\right)^2>4^2+5^2\Rightarrow\left(4+5\right)^3>4^2+5^2\)
đ) \(9^2-3^2=81-9=82;\left(9-3\right)^2=6^2=36\Rightarrow9^2-3^2>\left(9-3\right)^2\)
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\(1;4^5.6^5=\left(4.6\right)^5=24^5\)
\(7^2.8^2=\left(7.8\right)^2=56^2\)
\(9^2.2^4=9^2.4^2=\left(9.4\right)^2=36^2\)
\(4^3.7^6=4^3.49^3=\left(49.4\right)^3\)
\(27^4.4^6=\left(27^2\right)^2.64^2=\left(27^2.64\right)^2\)
Bài 1 : Viết tích dưới dạng 1 lũy thừa :
a) 45 . 65 = ( 4 . 6 )5 = 245
b) 72 . 82 = ( 7 . 8 )2 = 562
c) 92 . 24 = ( 32 )2 . 24 = 34 . 24 = ( 3 . 2 )4 = 64
d) 43 . 76 = ( 22 )3 . 76 = 26 . 76 = ( 2 . 7 )6 = 146
e) 274 . 46 = ( 33)4 . ( 22 )6 = 312 . 212 = ( 3 . 2 )12 = 612
a) \(100-\left(3.5^2-2.3^3\right)\)
\(100-\left(75-52\right)=100-23=77\)
b)\(4.5^2-3.2^3+3^9:3^7\)
\(100-24+9=85\)
c) \(\left(392:7\right).2^3-2^3+2020^0\)
\(8\left(56-1\right)+1=441\)
d) \(\left(6^2+7^2+8^2+9^2+10^2\right)-\left(1^2+2^2+3^2+4^2+5^2\right)=275\)
(lười - thông cảm :(
Đây bạn ơi a,\(100-\left(3.5^2-2.3^3\right)=100-\left(75-54\right)\))=100-19=81
b,\(4.5^2-3.2^3+\frac{3^9}{3^7}=100-24+9=85\)
c,\(\left(392:7\right).2^3-2^3+2020^0=56.2^3-2^3+1=441\)
d,\(=\left(6^2-1^2\right)+\left(7^2-2^2\right)+\left(8^2-3^3\right)+\left(9^2-4^2\right)+\left(10^2-5^2\right)\)
=\(5.7+5.9+5.11+5.13+5.15=5\left(7+9+11+13+15\right)\)
=\(5.55=275\)