Question

I need help on this one ​

Answer 1

Explanation:

`√(87x) =√(29*3* x)`

When
`x=21` we get:

`√(87x) =√(29*3* 21)`

`=√(29*3*3*7)`

`=3√(29*7)`

`=3√(203)`

So when
`x=21` we can simplify
`√(87x)`.