Question

How do you solve the equation `sqrth=9`?

Answer 1

`h=81`

Explanation:

`sqrth=9`

`"to 'undo' the root "color(blue)"square both sides"`

`"note" (sqrt100)^2=sqrt100xxsqrt100=10xx10=100`

`"that is we obtain the value inside the root"`

`rArr(sqrth)^2=9^2`

`rArrh=81" is the solution"`