1)|5-|х||=0. 2)|7-|х||=0. 3)7|х|-2|х|=3|х|+12. Created by 53008831. matematika-ru

1)|5-|х||=0. 2)|7-|х||=0. 3)7|х|-2|х|=3|х|+12...

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1)
5 - |x| = 0
|x| = 5
x = -5 и x = 5

2)
7 - |x| = 0
|x| = 7
x = -7 и x = 7

3) 5|x| - 3|x| = 12
2|x| = 12
|x| = 6
x = -6 и x = 6

0 votes Thanks 1

53008831 спасибо

ainatova2005 1)5-|х||=0
-|х|=-5
х=5
х={-5,5}
2)7-|х||=0
-|х|=-7
х=7
х={-7,7}
3)7|х|-2|х|=3|х|+12
5|х|-3|х|=12
2|х|=12
|х|=12÷2
|х|=6
х={-6,6}
отметь как лучший пж удачи

1 votes Thanks 0

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