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If |x^2-7|le 9 then find the values of ...

If `|x^2-7|le 9 ` then find the values of x

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Verified by Experts

The correct Answer is:
`x in [-4,4]`
`|x^2-7|le9`
or `-9 le x^2-7 le 9 `
`or -2le x^2le 16`
`x^2 le 16 `
`rArr x in [-4,4]`
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