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Question

Solve |3x2|12,xϵR

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Solution

We have,

|x|aaxa.

|3x2|12,123x212

123x2 and 3x212

12+23x and 3x12+2

323x and 3x52

12x and x56

12x56

solution set ={xϵR:12x56}=[12,56]


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