Solve.

l 2x +1 l = 4

I've never done 'exact; values before any help would be awsome. i've got 3/2 and -5/2, or is it 5/2?

Thanks.

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- February 4th 2008, 04:22 PMwhite_capQuick easy question.
Solve.

l 2x +1 l = 4

I've never done 'exact; values before any help would be awsome. i've got 3/2 and -5/2, or is it 5/2?

Thanks. - February 4th 2008, 05:14 PMCursed
Well, your original answers of and are correct.

Basically you have to solve the equation twice. The first time you treat the absolute value as if it were positive, and the second time you treat the absolute value as if it were negative. You do this so you can figure out the positive and negative values that work.

and

You can always check your answers by plugging them in:

Correct.

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Correct.

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Wrong. - February 7th 2008, 09:39 AMpombiux4
- February 18th 2009, 12:09 PMmr fantastic