Question

How do you solve `sqrt(8n-5)-1=2`?

Answer 1

`n=7/4`

Explanation:

`sqrt(8n-5)-1=2`
`sqrt(8n-5)=3`
`(sqrt(8n-5))^2=3^2`
because `sqrt(8n-5)=(8n-5)^(1/2)`, so `(8n-5)^(1/2*2)=8n-5`

`8n-5=9`
`8n=14`
`n = 14/8=7/4`