Предмет: Алгебра, автор: Аноним

помогите пожалуйста эти 4 задание пожалуйста​

Приложения:

Ответы

Автор ответа: anna171770
1

Ответ:

Объяснение:

1. 4y²+12y+9 = (2y +3)²

2. 4y² +24y +36 = (2y+6)²

3. b² - 6b + 9 = (b-3)² = (123 - 3)² = 120² = 14400

4. 25x² + 30x + 9 = (5x + 3)²

anna171770: Пожалуста
anna171770: Пожалуйста
Автор ответа: ildar502020
0

Ответ:

Объяснение:

А1.  4у²+12у+9=  (2y)² +2 *2y*3 +3² = (2у + 3)²;

***

A2.  4.   4y²+24y+36= (2y)² +  2*2y*6  + 6² = (2y+6)².

***

A3.   b²-6b+9=(b-3)²  при b =123

(123-3)² = 120² = 14 400.

***

A4.    25x²+30x+9=(5x)² + 2*5x*3 + 3²=(5x+3)².

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