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87232621571
@87232621571
August 2021
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Помогите пожалуйста мне очень срочно надо )))
НОМЕР 14 15 16 ПОМОГИТЕ
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GenaPeryatin
Verified answer
14.
15
16.
3 votes
Thanks 1
m11m
Verified answer
14)
2ab-4b
-
4b
=
2b(a-2)
-
4b
=
2b
-
4b
=
-2b
a²-4a+4 a-2 (a-2)² a-2 a-2 a-2 a-2
Ответ: В.
15)
2a-b
=5
3a+2
4b-8a
=
4(b-2a)
=
-4(2a-b)
=
-4
* 5 = -4
15a+10 5(3a+2) 5(3a+2) 5
Ответ: С.
16) (
6a
)² * (
5b³
)⁴ * (6a)² =
(6a)² * (5b³)⁴ * (6a)²
=
(5b³)⁴
=
5⁴ * b¹²
=
(5b) (6a ) (5b)² * (6a)⁴ (5b)² 5² * b²
=5² * b¹⁰=25b¹⁰
Ответ: А.
2 votes
Thanks 1
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Answers & Comments
Verified answer
14.15
16.
Verified answer
14) 2ab-4b - 4b = 2b(a-2) - 4b = 2b - 4b = -2ba²-4a+4 a-2 (a-2)² a-2 a-2 a-2 a-2
Ответ: В.
15) 2a-b =5
3a+2
4b-8a = 4(b-2a) = -4(2a-b) = -4 * 5 = -4
15a+10 5(3a+2) 5(3a+2) 5
Ответ: С.
16) (6a)² * (5b³)⁴ * (6a)² = (6a)² * (5b³)⁴ * (6a)² = (5b³)⁴ = 5⁴ * b¹² =
(5b) (6a ) (5b)² * (6a)⁴ (5b)² 5² * b²
=5² * b¹⁰=25b¹⁰
Ответ: А.