Question

Calculati modulele:
|-3x+1|=10
|4x|=8
|-5x+5|=15
|14x-7|=7
|1-√2|+|1+√2|
Va rog din suflet ajutati-ma!! <3

Answer 1

•|-3x+1|=10/-1=
|-3x|=9/:3=>x=3
|-3x|=9/:(-3)=>x=-3
•|4x|=8
|4x|=8/:4=>x=2
|4x|=8/:(-4)=>x=-2
•|-5x+5|=15/-5
|-5x|=10/:5=>x=2
|-5x|=10/:(-5)=>x=-2
•|14x-7|=7/+7
|14x|=14/:14=>x=1
|14x|=14/:(-14)=>x=-1
La ultima nu știu.Sper ca ti-am fost de ajutor.