Предмет: Математика, автор: popkarar

Напишите с решением пожулайста срочно надо даю 70 баллов

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sytakovi222: спс фуравас задалбался отвечать робот удолет решение и все

Ответы

Автор ответа: Furavas

Ответ:

Пошаговое объяснение:

1) 5x²+8x-7-2x²+2x+12

3x²+10x+5

2)2x-3-2x²-5x-18

-3x-21-2x²

3)6a²-3a+11+3a+a²-7

7a²+4

4)14xy-9x²-3y²+3x²-5xy+4y²

9xy-6x²+y²

5)7ab²-15ab+3a²b+30ab-8a²b

7ab²+15ab-5a²b

Автор ответа: Букса

Ответ:

Пошаговое объяснение:

1) 5х² + 8х - 7 - 2х² + 2х + 12 = 3х² + 10х + 5

2) 2х - 3 - 2х² - 5х - 18 = -2х² - 3х - 21

3) 6а² - 3а + 11 + 3а + а² - 7 = 7а² +4

4) 14ху - 9х² - 3у² + 3х² - 5ху + 4у² = 9ху - 6х² + у²

5) 7ав² - 15ав + 3а²в + 30ав - 8а²в = 7ав² + 15ав - 5а²в

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