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Ответ:

Пошаговое объяснение:

1. 8¹⁶⁺⁵⁻¹⁸ = 8³

10¹⁰⁻¹⁻⁵ = 10⁴

(-2)⁷⁺⁴⁻⁸ = (-2)³ = -8

(0,3)¹⁰⁺⁷⁻⁸⁻⁶ = 0,3³

2.

(2b-3)(5b+7)+21 = 10b² - 15b + 14b - 21 + 21 = 10b² - b

5a - (a+1)(4a+1) = 5a - 4a² - 4a - a - 1 = -4a² - 1

3.

3(2 - x) - x = 5

6 - 3x - x = 5

4x = 1

x = 0,25

24 - 10x - 8 = 6

10x = 10

x = 1

-88 + 16x + 40 = 15x - 12

x = -12 + 48

x = 36

Ответ:

1.a)8^16•8^5:8^18= 8^3

b)10^10:10•10^5=10^4

2.a)10b^2+14b-15b-21+21=10b^2-b

b)5a-4a^2-a-4a-1=a-4a^2-1

3.a)24-2(5x+4)=6

24-10x-8=6

-10x=-24+8+6

-10x=-10

x=1

b)-8(11-2x)+40=3(5x-4)

-88+16x+40=15x-12

16x-15x=88-40-12

x=36