Question

a) Rezolvati in R ecuatia |2x+1|=3
b) Aflati valoarea reala a lui m astfel incat 2 sa fie solitie a ecuatiei mx+2=5x-m
Dau coroana

Answer 1

2x+1=3 =>2x=2 x=1
-2x-1=3=>-2x=4 x=-2

b) m2+2=5.2-m
2m+m=10-2
3m=8
m=8/3 

Cred ca asa se rezolva.