a) 2⁸

b) 10⁵

c) 8³ . 6³ . 7³

d) a⁹

e) 10⁹

f) 2x⁵

Lời giải:

a. $=2^8$

b. $=10^5$

c. $=8^3.6^3.7^3=(8.6.7)^3=336^3$

d. $=a^9$

e. $=10000.10^3.100=10^4.10^3.10^2=10^{4+3+2}=10^9$

f. $=(2x)^5$

Bài \(2\)

\(a)\) \(2.2.2.2.2.2.2.2=2^8\)

\(b)\) \(10.10.10.10.10=10^5\)

\(c)\) \(8.8.8.6.6.7.7.7=8^3.6^2.7^3\)

\(d)\) \(a.a.a.a.a.a.a.a.a=a^9\)

\(e)\) \(10000 . 10 . 10 . 10 . 100\)

\(=10^4.10.10.10.10^2=10^9\)

\(f)\) \(2x.2x.2x.2x.2x=\left(2x\right)^5\)

a) \(2\cdot2\cdot2\cdot2\cdot2\cdot2\cdot2\cdot2\)

\(=2^{1+1+1+1+1+1+1+1}\)

\(=2^8\)

b) \(10\cdot10\cdot10\cdot10\cdot10\)

\(=10^{1+1+1+1+1}\)

\(=10^5\)

c) \(8\cdot8\cdot8\cdot6\cdot6\cdot6\cdot7\cdot7\cdot7\)

\(=8^{1+1+1}\cdot6^{1+1+1}\cdot7^{1+1+1}\)

\(=8^3\cdot6^3\cdot7^3\)

\(=\left(8\cdot6\cdot7\right)^3\)

\(=336^3\)

d) \(a\cdot a\cdot a\cdot a\cdot a\cdot a\cdot a\cdot a\cdot a\)

\(=a^{1+1+1+1+1+1+1+1+1}\)

\(=a^9\)

e) \(10000\cdot10\cdot10\cdot10\cdot100\)

\(=10^4\cdot10\cdot10\cdot10\cdot10^2\)

\(=10^{4+1+1+1+2}\)

\(=10^9\)

f) \(2x\cdot2x\cdot2x\cdot2x\cdot2x\)

\(=\left(2x\right)^{1+1+1+1+1}\)

\(=\left(2x\right)^5\)

\(=32x^5\)

= 9818

\(=9818\)

=9818

ơ kìa số to thé

\(10\cdot10=100\)

\(100\cdot100=10000\)

Tính:

10*10=100

100*100=10000

1000*1000=1000000

10000*10000=100000000

100000*100000=10000000000

1000000*1000000=1000000000000

10000000000*10000000000=100000000000000000000

`a, 1000 : 100 = 10`

`b, 75 xx 100 = 7500`

`c, 900 xx 10 = 9000`

`d, 8 xx 100 : 10 : 10 xx 10000 = 80000`

\(a,1000:100=10\\ b,75\times100=7500\\ c,900\times10=9000\\ d,8\times100:10:10\times10000\\ =800:10:10\times10000=8\times10000=80000\)

a)\(1000:100=10\)
b)\(75\times100=7500\)

c)\(900\times10=9000\)

d)\(8\times100:10:10\times10000=8\times10000=80000\)

=1000000

k mk nha 

mk k bn rùi đó

10000 . 10 + 90000 . 19 

= 100 000 + 900 000

= 1 000 000

ủng hộ nha k mk mk k lại

= 10.(10000 + 90000)

= 10. 100000

= 1000000

10*10*10*10*...........10= 10000000000

mình nha các bạn !!!

10*10*10*10...........10 = 10000000000 

số cần tìm là : 

10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 = 10000000000

đáp số : 10000000000 (có 10 chữ số 0 )