Math Problem Statement

|x + 2| > 9

Solution

The inequality shown in the image is:

x+2>9|x + 2| > 9

To solve this absolute value inequality, we break it into two cases based on the definition of absolute value:

  1. x+2>9x + 2 > 9
  2. x+2<9x + 2 < -9

Case 1:

Solve x+2>9x + 2 > 9: x>92x > 9 - 2 x>7x > 7

Case 2:

Solve x+2<9x + 2 < -9: x<92x < -9 - 2 x<11x < -11

Thus, the solution to the inequality x+2>9|x + 2| > 9 is: x>7orx<11x > 7 \quad \text{or} \quad x < -11

This means xx must be either greater than 7 or less than -11.

Would you like more details or have any questions?

Here are some related questions to expand your understanding:

  1. How would you solve x5>12|x - 5| > 12?
  2. What happens if the inequality is x+29|x + 2| \leq 9 instead?
  3. Can absolute value inequalities have no solution?
  4. How can you graph the solution of x+2>9|x + 2| > 9 on a number line?
  5. How do you interpret the solution of an inequality involving absolute values in real-world contexts?

Tip: When solving absolute value inequalities, always remember to handle both the positive and negative cases separately.

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Math Problem Analysis

Mathematical Concepts

Algebra
Inequalities
Absolute Value

Formulas

For |A| > B, the solution is A > B or A < -B
x + 2 > 9 or x + 2 < -9

Theorems

Absolute Value Inequality Theorem

Suitable Grade Level

Grades 7-9