Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Beautiful_Lier96

  • 3 years ago

can someone check my work? solve √(2x-1)=x-8 i came up with x=13 x=5. may i ask which one it is ?

  • This Question is Closed
  1. hartnn
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    if you put back x=5 you'll get \(\sqrt{9} =-3 \) which isn't true...its just +3 and not -3

  2. hartnn
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    x=13 is correct.

  3. hartnn
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    the reason you got 2 values instead of one is that you might have squared both sides of that equation. this adds/attaches one more root to the equation which may not satisfy the original equation.

  4. Beautiful_Lier96
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oooh. thanks :) i understand now. i did square both sides because i did not understand which property to do..

  5. hartnn
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ok, welcome ^_^ glad i could help :)

  6. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy