Đáp án là A

Ta có: 10.10.10.100 = 10.10.10.10.10 =  10 5

Đáp án: A

10.10.10.100 = 10.10.10.10.10 = 10 5

a, 4⁸.8⁴

= (2²)⁸.(2³)⁴

= 2¹⁶.2¹²

= 2²⁸

b, 4¹⁵.5¹⁵

= (4.5)¹⁵

= 20¹⁵

c, 2¹⁰.15 + 2¹⁰.85

= 2¹⁰.(15 + 85)

= 2¹⁰.100

=2¹⁰.(2.5)²

= 2¹².5²

d, 3³.9²

= 3³ . (3²)²

= 3³.3⁴

= 3⁷

e, 5¹².7 - 5¹¹.10

= 5¹¹.(5.7 - 10)

= 5¹¹.25

=5¹¹.5²

=5¹³

f, \(x^1\).\(x^2\).\(x^3\)....\(x^{100}\)

= \(x^{1+2+3+...+100}\)

= \(x^{\left(1+100\right).100:2}\)

= \(x^{5050}\)

❤Em cảm ơn cô Nguyễn Thương hoài rất nhiều a!❤

a, 48.84

= (22)8.(23)4

= 216.212

= 228

b, 415.515

= (4.5)15

= 2015

c, 210.15 + 210.85

= 210.(15 + 85)

= 210.100

=210.(2.5)2

= 212.52

d, 33.92

= 33 . (32)2

= 33.34

= 37

e, 512.7 - 511.10

= 511.(5.7 - 10)

= 511.25

=511.52

=513

f, �1x1.�2x2.�3x3....�100x100

= �1+2+3+...+100x1+2+3+...+100

= �(1+100).100:2x(1+100).100:2

= �5050x5050

1.
a) \(3^4\times3^5\times3^6=3^{4+5+6}=3^{15}\)

b) \(5^2\times5^4\times5^5\times25=5^2\times5^4\times5^5\times5^2=5^{2+4+5+2}=5^{13}\)

c) \(10^8\div10^3=10^{8-3}=10^5\)

d) \(a^7\div a^2=a^{7-2}=a^5\)

2.

\(987=900+80+7\\ =9\times100+8\times10+7\\ =9\times10^2+8\times10^1+7\times10^0\)

\(2021=2000+20+1\\ =2\times1000+2\times10+1\times1\\ =2\times10^3+2\times10^1+1\times10^0\)

\(abcde=a\times10000+b\times1000+c\times100+d\times10+e\times1\\ =a\times10^4+b\times10^3+c\times10^2+d\times10^1+e\times10^0\)

còn bài 2

Đáp án cần chọn là: A

1) 2 . 2 . 2 . 3 . 3 = 2³ . 3²

2) 2³ . 2² . 2⁴ = 2^{3 + 2 + 4} = 2⁹

  10² . 10³ . 10⁵ = 10^{2 + 3 + 5} = 10¹⁰

1)

a) 2³x 3² = 72

2)

a) 2³x2²x2⁴= 2⁹

b) 10^2x10^3x10^5=10^10

c)x.x^5=x^6'

k mik nha

a)2.2.2.3.3=2³.3²=8.9=72

a)2³.2².2²=2³⁺²⁺²=2⁷=128

b)10².10².10⁵=10²⁺²⁺⁵=10⁹=1000000000

c)x.x⁵=x¹.x⁵=x¹⁺⁵=x⁶

8=2^3    ;      20=20^1    ;    60=60^1    ;    90=90^1

16=2^4  ;      27=3^3      ;    81=3^4      ;    100=10^2

Đáp án: A

5.5.5.5 =  5 4