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|2x-1| = 11
Va rog ajutati-ma,multumesc


Răspuns :

|2x-1| = 11

cazul 1 : 2x-1 = 11
2x = 11+1
2x = 12
x = 12/6
x = 2.

cazul 2 : 2x-1 = -11
2x = -11+1
2x = -10
x = -10/2
x = -5.

S = {-5;2}.



J'espère aidé :)
|2x-1|=11
2x-1=11 sau 2x-1=-11

Primul caz:
2x-1=11
2x=12
x=6

Al doilea caz:
2x-1=-11
2x=-11+1
2x=-10
x=-5

=> x€{5;6}