Math Problem Statement

solve the inequality. Write your answer using interval notation. |2 − x| − 4 ≥ −3

Solution

The inequality to solve is:

2x43|2 - x| - 4 \geq -3

Step 1: Isolate the absolute value

Add 44 to both sides to isolate the absolute value expression:

2x3+4|2 - x| \geq -3 + 4 2x1|2 - x| \geq 1

Step 2: Solve the absolute value inequality

Now, we solve the inequality 2x1|2 - x| \geq 1.

Recall that the absolute value inequality AB|A| \geq B can be rewritten as two inequalities: ABorABA \geq B \quad \text{or} \quad A \leq -B So, for our case: 2x1or2x12 - x \geq 1 \quad \text{or} \quad 2 - x \leq -1

Step 3: Solve each inequality

1. 2x12 - x \geq 1

Subtract 2 from both sides: x1-x \geq -1 Multiply by 1-1 and reverse the inequality sign: x1x \leq 1

2. 2x12 - x \leq -1

Subtract 2 from both sides: x3-x \leq -3 Multiply by 1-1 and reverse the inequality sign: x3x \geq 3

Step 4: Combine the solutions

The solution is x1x \leq 1 or x3x \geq 3. In interval notation, this is:

(,1][3,)(-\infty, 1] \cup [3, \infty)

Final Answer:

x(,1][3,)x \in (-\infty, 1] \cup [3, \infty)

Would you like more details on any step or further questions? Here are some related questions for further practice:

  1. How do you solve inequalities involving two absolute values?
  2. What is the graphical interpretation of absolute value inequalities?
  3. How do you approach solving x+ab|x + a| \leq b for aa and bb?
  4. Can absolute value inequalities ever have no solution?
  5. What are the key differences between solving xb|x| \geq b and xb|x| \leq b?

Tip: When solving absolute value inequalities, remember to break them into two cases, reflecting the positive and negative possibilities of the expression inside the absolute value.

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Math Problem Analysis

Mathematical Concepts

Absolute Value
Inequalities
Algebra

Formulas

Absolute value inequality |A| ≥ B can be rewritten as A ≥ B or A ≤ -B

Theorems

Properties of Absolute Value Inequalities

Suitable Grade Level

Grades 9-11