Question

Solve without absolute value |4-√7|

Answer 1

`|x|=x` for
`x > 0`

`|x|=-x` for
`x\leq0`

`\sqrt7 < \sqrt9\\\sqrt7 < 3`

Therefore

`4-\sqrt7 > 0\Rightarrow |4-\sqrt7|=4-\sqrt7`