Question

lxl+5=18


a. 5 or - 5
b. 13 or - 13
c. 18 or - 18
d. 23 or - 23

Answer 1

subtract 5 from both sides

|x| = 13

the are now 2 equations

x = 13 and x = -13

Answer 2

Thank youuu

Answer 3

We have
|x|+5=18
|x| or Absolute Value function is defined as
x for x>=0
-x for x<0
so
here we have
\[|x|+5=18\]
or
\[|x|=13\]
or
\[x=\pm 13\]