Предмет: Математика, автор: neoki

6 класс,математика.Дам 25 баллов.Мне нужно с решением,заранее спасибо

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Ответы

Автор ответа: mk20085566
0

Ответ:

1.|х-5|=2

х-5=2

х-5=-2

х¹=5+2=7

х²=3(5-2)

2.|х+4|=7

х+4=7

х+4=–7

х¹=3

х²=-11

3.|2х-3|=13

2х-3=13

2х-3=–13

х¹=16÷2=8

х²=-10÷2=–5

4.|3х-2|=4

3х-2=4

3х-2=–4

х¹=6÷3=2

х²=-4÷2=–⅔

5.8-5х=13-3х

-5х+3х=13-8

2х=5

х=2,5

6. 6|х|-4|х|=8

6-4=2

2|х|=8

х¹=4,х²=–4

7.5,4|х|+2,6|х|=2

8|х|=2

х¹=0,25;х²=–0,25

8.4|х|+5|х|=27

9|х|=27

х¹=3;х²=–3

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