Math Problem Statement
Solve the following inequality algebraically. 2, vertical bar, x, plus, 8, vertical bar, minus, 5, is greater than, 3 2∣x+8∣−5>3
Solution
To solve the inequality algebraically, follow these steps:
Step 1: Isolate the absolute value expression
Start by isolating the absolute value expression on one side of the inequality.
Add 5 to both sides:
Next, divide both sides by 2:
Step 2: Break the absolute value inequality into two cases
The inequality means that the expression inside the absolute value can be either greater than 4 or less than -4. So, we split this into two cases:
- Case 1:
- Case 2:
Step 3: Solve each case
Case 1:
Subtract 8 from both sides:
Case 2:
Subtract 8 from both sides:
Step 4: Combine the solutions
The solutions from the two cases give us the solution set:
Step 5: Write the solution in interval notation
The solution set is the union of the two intervals:
This is the algebraic solution to the inequality .
Would you like more details or have any questions?
Here are five related questions for practice:
- Solve the inequality .
- Solve the equation .
- What is the solution to ?
- Solve the compound inequality and .
- Find the solution set for .
Tip: When solving absolute value inequalities, always consider both the positive and negative scenarios for the expression inside the absolute value.
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Math Problem Analysis
Mathematical Concepts
Algebra
Inequalities
Absolute Value
Formulas
Absolute value inequality: |A| > B implies A > B or A < -B
Theorems
Properties of Absolute Value
Inequality Solving
Suitable Grade Level
Grades 9-11