10

Set 12: Linear Inequalities (Intermediate)

Explanation

Answer: A

Solve: x+2>4|x + 2| > 4

A.

x>2x > 2 or x<6x < -6

✓ Correct
B.

6<x<2-6 < x < 2

C.

x>2x > 2

D.

x<6x < -6

Detailed Explanation

Choice A is correct. Choice A is the correct answer. "GreatOR" splits into two outward cases. 1. Case 1: x+2>4x>2x + 2 > 4 \rightarrow x > 2 2. Case 2: x+2<4x<6x + 2 < -4 \rightarrow x < -6 3. Combine: x>2x > 2 or x<6x < -6 Strategic Tip: Absolute value represents distance. Distance >4> 4 means further away than 4 units in either direction. Choice B is incorrect because it represents x+2<4|x+2| < 4 (distance less than 4). Choice C is incorrect because it misses the negative case. Choice D is incorrect because it misses the positive case.

Key Steps:

The correct answer is x>2x > 2 or x<6x < -6

Why others are wrong:
B: Choice B is incorrect and may result from a calculation error.
C: Choice C is incorrect and may result from a calculation error.
D: Choice D is incorrect and may result from a calculation error.

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