How can a radical equation be verified algebraically without a calculator?

  • Context:
  • Thread starter Thread starter mathdad
  • Start date Start date
  • Tags Tags
    Radical
Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
2 replies · 2K views
mathdad
Messages
1,280
Reaction score
0
Verify that both sides of the radical equation agree without using a calculator. See picture. How can this be done algebraically?

View attachment 7966
 

Attachments

  • sDraw_2018-03-19_01-55-12.png
    sDraw_2018-03-19_01-55-12.png
    5.7 KB · Views: 155
Mathematics news on Phys.org
You asked this question before:

https://mathhelpboards.com/pre-calculus-21/radical-equation-1-a-23550.html
 
It's good to know that this site keeps a record of posted questions as reference notes.