SOLUTION: how many solutions are there to |x+2| = 14 a. 1 b. 2 c. -16 d. none of the above

Question 152651: how many solutions are there to |x+2| = 14
a. 1
b. 2
c. -16
d. none of the above
Answer by mducky2(62) (Show Source): You can put this solution on YOUR website!
We could solve this easily just by solving for x. In order to solve an absolute value equation, we usually have to divide it up into two parts, since the expression is either positive or negative.

If we assume it's positive, then the absolute value signs don't even matter. We can just remove them and solve:

Now let's assume is negative. If it were, then the absolute value sign changed it to be positive. The only way we can do that without absolute value signs is to multiply times -1. Then we can solve it:

Since we've found all the solutions to x, whether is positive or negative, we know that there are 2 solutions to .
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