Math Problem Statement
How many solutions exist for 2|x − 1| = 8?
Solution
We are given the equation:
Step 1: Isolate the absolute value expression
First, divide both sides by 2 to isolate the absolute value expression:
Step 2: Solve for the two cases
The absolute value equation means that can either be 4 or -4. Therefore, we have two cases to solve:
Case 1:
Solve for :
Case 2:
Solve for :
Step 3: Conclusion
The two solutions to the equation are:
Thus, there are 2 solutions to the equation.
Would you like further details or have any questions? Here are some related questions to explore:
- How would the solutions change if the equation were ?
- What is the general method to solve absolute value equations of the form ?
- How can you solve absolute value inequalities such as ?
- What happens if the absolute value equation includes a negative sign inside, like ?
- Can absolute value equations have no solutions? If so, when?
Tip: When solving absolute value equations, always consider both the positive and negative cases for the expression inside the absolute value.
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Math Problem Analysis
Mathematical Concepts
Absolute Value Equations
Linear Equations
Formulas
|x - a| = b implies x - a = b or x - a = -b
Theorems
Absolute Value Property
Suitable Grade Level
Grades 6-8