To calculate: The solution of absolute value equation and write solution set

balff1t

balff1t

Answered question

2021-11-19

To calculate:
The solution of absolute value equation and write solution set in interval notation.
a) |x1|=|3x+5|
b) |x1|=|x+5|
c) |x1|=|1x|

Answer & Explanation

Lupe Kirkland

Lupe Kirkland

Beginner2021-11-20Added 21 answers

Step 1
Consider the provided equation |x1|=|3x+5|
The equation is in the form |u|=|k|, where u=x1
Thus, the equation |x1|=|3x+5| is equivalent to
x1=3x+5 or x1=(3x+5)
15=3xx or 4x=4
6=2x or 4x=4
x=3 or x=1
Therefore, the solution set is {x3x1} and the solution in interval notation is {3, 1}
mylouscrapza

mylouscrapza

Beginner2021-11-21Added 22 answers

Step 1
Consider the provided equation |x1|=|x+5|
The equation is in the form |u|=|k|, where u=x1
Thus, the equation |x1|=|x+5| is equivalent to
x1=x+5 or x1=(x+5)
15=xx or x+x=5+1
6=0 or 2x=4
6=0 or x=2
Since, 6=0 is not possible, therefore, x=2 is valid.
Therefore, the solution set is {xx=2} and the solution in interval notation is {2}
user_27qwe

user_27qwe

Skilled2021-11-29Added 375 answers

Step 1
Consider the provided equation |x1|=|1x|
The equation is in the form |u|=|k|, where u=x1
Thus, the equation |x1|=|1x| is equivalent to
x1=1x or x1=(1x)
x+x=1+1 or xx=1+1
2x=2 or 0=0
x=1 or 0=0
Therefore, the solution set is R and the solution in interval notation is , 

Do you have a similar question?

Recalculate according to your conditions!

Ask your question.
Get an expert answer.

Let our experts help you. Answer in as fast as 15 minutes.

Didn't find what you were looking for?