Question

Sa se determine numarul real care determina inegalitatile:
/2x-3/=0
/4-6x/=0
/x/=3
/3x-4/-5=0
/y-2/=0
/a+5/=0

Answer 1

Daca modulul lui x este 0, x=0

a) 2x-3 = 0
2x = 3
x = 1,5

b) 4-6x = 0
6x = 4
x = 0,(6)

c) $x\in\{3,-3\}$

d) |3x-4| = 5
$3x-4\in\{5,-5\} \\ \\ 3x\in\{9,-1\} \\ \\ x\in\{3;~0,(3)\}$

e) y-2 = 0
y = 2

f) a+5 = 0
a = -5