posted by Anonymous on .
Solve the absolute value equation.
I I will represent absolute value
I 2x-4 I -1= 11
Would the solutions be x=8 and x= -4?
* Algebra - Reiny, Tuesday, October 13, 2009 at 5:41pm
I just mentally tested x=8.
It did not work in your equation
take the -1 to the other side and follow the steps I just showed you in the previous problem
I did take the -1 to the other side. Here's exactly how I did it:
I 2x-4 I -1=11
added 1 to both sides
That came out to:
I 2x-4 I =12
I separated it into
2x-4=12 and 2x-4=-12
add 4 to both sides of each
2x=16 and 2x=-8
divide each by two
x=8 and x= -4
What part of my figuring is off?
I am sorry, you are right!!!!!
Three strikes, I guess I am out