Question

resolva a inequação em R.|4×-2|⩽14

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Answer 1

-14≤4x-2≤14

4x-2≤14

4x-2≥-14

4x-2≤14

4x≤14+2

4x≤16

x≤16/4

x≤4

4x-2≥-14

4x≥-14+2

4x≥-12

x≥-12/4

x≥-4

S={xeR|-4≤x≤4}