a)   \(2.2.3.3.3.2=2^3.3^3\)

b)   \(7.35.7.25=7.5.7.7.5^2=5^3.7^3\)

c)   \(2.3.8.12.24=2.3.2^3.2^2.3.2^3.3=2^9.3^3\)

d)   \(x.x.y.y.x.y=x^3.y^3\)

e)   \(1000.10.10.10=10^3.10.10.10=10^6\)

a)  2.2.3.3.3.2=2^3  .  3^3  =(2.3)^3 =6^3

b)  kiem tra lai de xem co sai ko

c) 2.3.8.12.24=(2.12).(3.8).24=24.24.24=24^3

d) x.x.y.y.y.x=x^3  .  y^3 =(xy)^3

e) 1000.10.10.10=1000.(10.10.10)=1000^2

2.2.3.3.3.2 = 2³.3³

 7.35.7.25 = 7.7.5.7.5.5 = 7³.5³

2.3.8.12.24 = 2.3.2.2.2.3.2.2.2.2.2.3 = 2⁹.3³

x.x.y.y.x.y = x³.y³

1000.10.10.10 = 10.10.10.10.10.10 = 10⁶

AI THẤY ĐÚNG THÌ ỦNG HỘ NHA

a) 

  2.2.3.3.3.2 

= ( 2.2.2.) . ( 3.3.3) 

= 2³ . 3³
 b) 7.35 .7.25 

= 7.5.7.7.5.5

= 7³ .5³ 

c) 2.3.8.12.24

= 2.3.2.4.3.2.2.3.2.4

= ( 2.2.2.2.2 ) . ( 3.3.3) . ( 4.4)

= 2⁵ .3³ . 4²

d) x . x . y.y . x .y

= x³ . y³

e) 1000 . 10.10.10

= 1000.1000

= 1000² 

Cbht!!!

9¹² x 27⁵ = (3²)¹² x (3³)⁵ = 3²⁴ x 3¹⁵ = 3²⁴⁺¹⁵ = 3³⁹

Chọn D

D. 3³⁹

5² . 5⁷ = 5^{2 + 7} = 5⁹

7⁵ . 7 = 7 . 7 . 7 . 7 . 7 . 7 = 7⁶

\(5^2.5^7=5^{2+7}=5^9\)
\(7^5.7=7^{5+1}=7^6\)

a: 12+29+34+121+138+116

=12+29+116+34+121+138

=12+29+29x4+17x2+11x11+23x6

=12+29x5+17x2+11x11+23x6

=6x2+6x23+29x5+17x2+11x11

=6x25+29x5+17x2+11x11

=150+145+34+121

=150+145+155

=150+300

=450

=150x3

b: 24+39+45+56+65+76+82+97

=24+56+45+65+39+76+82

=80+110+115+82

=190+115+82

=305+82

=387

=387x1