Question

Rezolvati ecuatia :
3x-12|x|=4 , x apartine R

Answer 1

3x-12|x|=4
-12|x|=4-3x
12|x|=3x-4
|x| =(3x-4)/12
1)[tex]x= \frac{-3x+4}{12} \\ 12x=-3x+4\\ 15x=4\\ x_{1}= \frac{4}{15} [/tex]
2)[tex]x= \frac{3x-4}{12}\\ 12x=3x-4\\ 9x=-4\\ x_{2}= \frac{-4}{9} [/tex]
x∈{4/15,-4/9}