Math Problem Statement

Carilah himpunan penyelesaian dari ketaksamaan yang diberikan: |2x + 4| < 8

Solution

The problem is asking for the solution set of the inequality involving absolute value:

2x+4<8|2x + 4| < 8

To solve this, we need to break the absolute value inequality into two parts:

Step 1: Remove the absolute value by setting up two inequalities:

8<2x+4<8-8 < 2x + 4 < 8

Step 2: Solve the compound inequality:

For the left inequality:

8<2x+4-8 < 2x + 4 Subtract 4 from both sides: 12<2x-12 < 2x Now, divide both sides by 2: 6<x-6 < x

For the right inequality:

2x+4<82x + 4 < 8 Subtract 4 from both sides: 2x<42x < 4 Now, divide both sides by 2: x<2x < 2

Step 3: Combine the results:

6<x<2-6 < x < 2

So, the solution set is: x(6,2)x \in (-6, 2)

This is the set of all xx such that xx is greater than -6 and less than 2.

Would you like more details on this or have any questions?

Here are some related questions to expand on this concept:

  1. How would you solve the inequality 3x59|3x - 5| \leq 9?
  2. What happens if the inequality is 2x+4>8|2x + 4| > 8?
  3. How do you solve an absolute value equation like x7=10|x - 7| = 10?
  4. What is the difference between solving x<c|x| < c and x>c|x| > c?
  5. How can absolute value inequalities be applied in real-world problems?

Tip: When solving absolute value inequalities, always remember to split them into two cases: one for the positive and one for the negative side.

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Math Problem Analysis

Mathematical Concepts

Algebra
Absolute Value Inequalities

Formulas

|ax + b| < c can be rewritten as -c < ax + b < c

Theorems

Absolute Value Inequality Theorem

Suitable Grade Level

Grades 7-9