Question

Cat fac |2x-1|=5 ? Raspunsul cat mai repede.

Answer 1

2x-1=5 si 2x-1=-5 (Din cauza modulului)
x=3      si x=-2

Answer 2

$\displaystyle |2x-1|=5 \\ 2x-1=5 \\ 2x=5+1 \\ 2x=6 \\ x= \frac{6}{2} \\ x=3 \\ 2x-1=-5 \\ 2x=-5+1 \\ 2x=-4 \\ x=- \frac{4}{2} \\ x=-2$