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Solve x^2-4|x|+3<0....

Solve `x^2-4|x|+3<0.`

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`x^2-4 |x|+3lt 0 `
`rArr ( |x |-1 )(|x|-3)lt 0 `
`rArr 1 lt |x| lt 3` `rArr -3 lt x lt -1 or 1 lt x lt 3`
`rArr x in (-3,-1 ) cup (1,3)`
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