Объяснение:

1

a^18:a^6×a^2=a^(18-6+2)=a^14

B)

2

(a^2)^5:a=a^10:a=a^(10-1)=a^9

Б)

3

-4х^4×5х^8= - 20х^12

Б)

4

(2а^3b^2c)^3=8a^9b^6c^3

A)

5

49a^4b^2c^10=(7a^2bc^5)^2

Б)

6

V=6X*4X×2X=48X^3 cм^3

Г)

7

(2,7-2,2)^3×(-1 1/5)^2=

=0,5^3×(-6/5)^2= (1/2)^3×36/25=

= 1/8×36/25= 9/50=0,18

8

1)

(-1/2х^2у)^3×(-2х^4у^3)^2=

= - 1/8х^6у^3×4х^8у^6=

= - 1/2х^14у^9

2)

-3 1/5ху^5×(-1/2х^2у)^4=

= - 16/5ху^5×1/16х^8у^4= - 1/5х^9у^9

9

72аb^3x^2(-1/9a^6b)=

= - 8a^7b^4x^2

a= - 1

b=1

X= - 1/2

-8(-1)^7×1^4×(-1/2)^2= - 8×(-1)×1×1/4=2

10

81a^4b^16c^24=(3ab^4c^6)^4

11

3^250 и 4^200

3^(5×50) и 4^(4×50)

(3^5)^50 и (4^4)^50

243^50 и 256^50

Сравниваем 243 и 256

243 < 256 , значит

243^50 <256^50

3^250 < 4^200