Which is the solution set of the inequality? |2x + 3| < 9

Answer 1

I. Assuming 2x + 3 ≥ 0

2x + 3 < 9

2x < 6

x < 3

II. Assuming 2x + 3 < 0

-(2x + 3) < 9

2x + 3 > -9

2x > -6

x > -3

-3 < x < 3

Answer 2

2x<ι6 or-6ι

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