i) |2|x|-7|=19
cazul 1:
2|x|-7=19
2|x|=26
|x|=13 => x=±13
cazul 2:
2|x|-7=-19
2|x|=-12
|x|=-6 => x apartine multimii vide
Kawaiimath
|2•|x|-7|=19
|2•|x| =19+7=26
x=26÷2
Show life that you have a thousand reasons to smile
© Copyright 2024 DOKU.TIPS - All rights reserved.
Verified answer
i) |2|x|-7|=19
cazul 1:
2|x|-7=19
2|x|=26
|x|=13 => x=±13
cazul 2:
2|x|-7=-19
2|x|=-12
|x|=-6 => x apartine multimii vide
Kawaiimath
|2•|x|-7|=19
|2•|x| =19+7=26
x=26÷2