Math Problem Statement

−∣2−x∣+4≥−9

Solution

We are given the inequality:

2x+49- |2 - x| + 4 \geq -9

Let's solve it step by step:

Step 1: Isolate the absolute value expression

Start by moving 44 to the other side:

2x94- |2 - x| \geq -9 - 4

2x13- |2 - x| \geq -13

Now, divide both sides of the inequality by 1-1. Remember that dividing by a negative number reverses the inequality sign:

2x13|2 - x| \leq 13

Step 2: Solve the absolute value inequality

The general solution for an absolute value inequality of the form AB|A| \leq B is:

BAB-B \leq A \leq B

So, we can rewrite the inequality:

132x13-13 \leq 2 - x \leq 13

Step 3: Solve for xx

Now, solve the inequality for xx. First, subtract 22 from all parts of the inequality:

132x132-13 - 2 \leq -x \leq 13 - 2

15x11-15 \leq -x \leq 11

Next, divide the inequality by 1-1, reversing the inequality signs:

15x1115 \geq x \geq -11

This simplifies to:

11x15-11 \leq x \leq 15

Final Answer:

The solution to the inequality is:

x[11,15]x \in [-11, 15]

This means xx can take any value between 11-11 and 1515, inclusive.


Would you like further details or clarifications?

Here are 5 related questions for further practice:

  1. Solve x+324|x + 3| - 2 \geq 4.
  2. Solve x57|x - 5| \leq 7.
  3. Solve 2x1+3<92|x - 1| + 3 < 9.
  4. Solve 3x4>03 - |x - 4| > 0.
  5. Solve 2x+15|2x + 1| \geq 5.

Tip: Always remember that dividing or multiplying an inequality by a negative number reverses the inequality sign.

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Math Problem Analysis

Mathematical Concepts

Algebra
Absolute Value Inequalities

Formulas

|A| ≤ B implies -B ≤ A ≤ B
Dividing an inequality by a negative number reverses the inequality sign

Theorems

Absolute Value Inequality Theorem

Suitable Grade Level

Grades 8-10