• Help me with absolute values, textbook doesn't explain question all the way .
    12 replies, posted
Okay, so an absolute value of |x - 5| = |3x+7| I have one solution which is x - 5 = 3x + 7 v -5 = 2x + 7 - 7 -12 = 2x -6 = x And the other (absolute values can be positive or negative) -x + 5 = -3x - 7 -x + 5 - 5 = -3x - 7 -5 -x = -3x + 3x - 12 2x = -12 x -6 Are there 4 solutions since there are 2 absolute values? If so, how do I go about doing that? Thanks to all the math whizzes who are going to help me out. Edit: Answers are defined as -6 and -1/2
So what are you asking?
theres only two solutions [editline]18th November 2010[/editline] also, do your own homework
absolute value of a negative number, IE -6, is 6. so |-6|=6
[QUOTE=rawr >:3;26148489]absolute value of a negative number, IE -6, is 6. so |-6|=6[/QUOTE] That about sums it up.
I assumed that, but the textbook lists -1/2 as another solution, which threw me off.
[QUOTE=hgncommand;26148762]I assumed that, but the textbook lists -1/2 as another solution, which threw me off.[/QUOTE] |x-5| = |3x+7| -x+5 = 3x+7 5 = 4x+7 -2=4x maybe? im not very good at math, that's probably wrong. but it does come out to -1/2
Yeah, I just did that question at school with a buddy to help me, and I got that, thanks cool.
This thread makes me feel uneducated.
Absolute value is the distance it is from zero. So basically, just figure out each side normally, but it would have to be positive.
x^2 -10x +25 = 9x^2 +41x + 49 8x^2 + 51x + 24 fuck it, can't be bothered to do the rest.
If a number is in the bars for Absolute Value, it's always positive. |6 - 10| + |5 - 9| |-4| + |-4| 4 + 4 8 understand
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