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The solution set of the inequation ∣2x−3∣≤4|2x - 3| ≤ 4 is

Solution

✅ Correct Option: 2

The absolute value ∣2x−3∣≤4|2x - 3| \leq 4 means the expression (2x−3)(2x - 3) must be within 4 units from zero.


For ∣A∣≤B|A| \leq B, the inequality becomes −B≤A≤B-B \leq A \leq B.

With A=2x−3A = 2x - 3 and B=4B = 4:

−4≤2x−3≤4-4 \leq 2x - 3 \leq 4


From the left inequality −4≤2x−3-4 \leq 2x - 3:

−4+3≤2x-4 + 3 \leq 2x

−1≤2x-1 \leq 2x

−12≤x-\dfrac{1}{2} \leq x


From the right inequality 2x−3≤42x - 3 \leq 4:

2x≤4+32x \leq 4 + 3

2x≤72x \leq 7

x≤72x \leq \dfrac{7}{2}


Combining both results:

−12≤x≤72-\dfrac{1}{2} \leq x \leq \dfrac{7}{2}

The solution set in interval notation is [−12,72]\left[-\dfrac{1}{2}, \dfrac{7}{2}\right].

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