РЕШЕНИЕ:

a²​−36b² ⋅ __a__ =
5a² ______ 5a−30b

(a ​−6b)(a+6b) ⋅ __a__ =
5a² ____ _______ 5(a−6b)

a+6b ⋅ __1__ =
5a ______ 5

a+6b =
25 a

1 + 6b =
___ 25a

1 + 6√216 =
25__ 25√96

= 0.04 + 0.36 = 0.4

Ответ: 0.4

РЕШЕНИЕ:

(2b−5a)⋅__1___ =
5a_ 2b__2b+5a

(4b² − 25a²)⋅__1___ =
10 a b______2b+5a

(2b-5a)(2b+5a)⋅__1___ =
10 a b_________2b+5a

2b-5a =
10 a b

1 - 1 =
5a _ 2b

1 __ - 1∙ 9 =
5∙1/5 _ 2

= 1 - 4.5 = - 3.5

Ответ: - 3.5

РЕШЕНИЕ:

( a + 7b − _1) : __b__ =
a⁷​−7ab___ a ___ 7b−a

( a + 7b − _1) : __b__ =
a(a-7b)___ a ___ 7b−a

a + 7b − (a-7b) : __b__ =
a(a-7b) __ __ ___ 7b−a

a + 7b − a + 7b : __b__ =
a(a-b) __ __ ___ 7b−a

14b __ : __b__ =
a(a-7b) __ 7b−a

14b __ ∙ a - 7b =
a(a-7b) __ -b

14 =
- a

14 __ = 3.5
- (-4)

Ответ: 3.5

РЕШЕНИЕ:

a^2​−b² : (1−1) =
ab____ b _ a

(a-b)(a+b) : (a-b) =
ab________ ba

(a-b)(a+b) ∙ (ab) =
ab________ a - b

a + b = 3 2/13 + 2 11/13 = 5 13/13 = 6

Ответ: 6

РЕШЕНИЕ:

__a___ : __a__ =
ab - b^2​ __ a²​-b²

__a___ ∙ (a-b)(a+b) =
b(a-b) __ a

a+b =
b

1.7 + 0.2 =
0.2

= 1.9 / 0.2 = 9.5

Ответ: 9.5

РЕШЕНИЕ:
5 b ⋅ a(a ​−b)
a−b___ 20b

5a
20

a
4

-41 = -10.25
4

Ответ: -10.25