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Alless
a fost răspuns

determinatii solutiile reale ale ecuatiilor:


l17-l2x-11ll=12

ps:bara aceea inseamna modul

dau 50 de puncte,va rog cu rezolvare,aratati cum ati facut

Răspuns :

Lauraionita13
|17-|2x-11||=12
*17-|2x-11|=12 /-17
-|2x-11|=-5
|2x-11|=5
*2x-11=5/+11
2x=16/÷2
x=8
*2x-11=-5/+11
2x=6/÷2
x=3
*17-|2x-11|=-12/-17
-|2x-11|=-29
|2x-11|=29
*2x-11=29/+11
2x=40/÷2
x=20
*2x-11=-29/+11
2x=-18/÷2
x=-9

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