Question

i) For -5 < x < 7, find the values of | x -2 |.​

Answer 1

is solved by the equivalent inequalities:

, we get, in the first step:

7−|4−x|<−11or7−|4−x|>11

Then we would reduce to get:

|4−x|>18or|4−x|<−

The second inequality is false, then:

(4−x<−18or4−x>18)

x>22orx<−14

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Answer 2

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