Question

dau coroana

doar b si c va roooooooog

Answer 1

b) |2x-1|=5 => 2x-1 poate fi 5 sau -5
2x-1=5 => 2x=5+1=6 => x=6÷2=3
2x-1=-5 => 2x=-5+1=-4 => x=-4÷2=-2

c) $| \frac{2x + 1}{3} | = 1$ => $\frac{2x + 1}{3}$ poate fi 1 sau -1
$\frac{2x - 1}{3} =1$ => 2x-1=1×3=3 => 2x=3+1=4 => x=4÷2=2
$\frac{2x - 1}{3} = - 1$ => 2x-1=-1×3=-3 => 2x=-3+1=-2 => x=-2÷2=-1

Sper ca te-am ajutat!