[High School - Algebra] Quadratic Equations

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  • DJ_Okami
    FFR Player
    • Feb 2007
    • 2
    #1

    [High School - Algebra] Quadratic Equations

    I need help with this question. I'm not sure how to start it off. Any help will be greatly apperciated:
    Find the solutions to the following equation algebraically, and verify your solution(s).

    0 = 3 - squareroot (x-3)
    screw this
    Tags: None
    • dandandamdandan1111
      the baker man
      • Jun 2007
      • 2176
      #2
      Re: High school Jr. Algebra Quadratic Equations

      I'M REALLY BORED.

      Step 1: 0=3-sqrt(X-3) Subtract 3 from both sides.
      Step 2: -3=-sqrt(X-3) Square both sides.
      Step 3: 9=-X+3 Subtract 3 from both sides.
      Step 4: 6=-X Multiply both sides by -1 to find X.
      X=-6

      This is probably right lol.

      EDIT: Lol, I took this last year in 7th grade.
      Last edited by dandandamdandan1111; 03-2-2008, 01:35 AM.

        Comment

        • dore
          caveman pornstar
          FFR Simfile Author
          FFR Music Producer
          • Feb 2006
          • 6317
          #3
          Re: High school Jr. Algebra Quadratic Equations

          dunno where you got that negative in step 3

          0=3-sqrt(x-3)
          -3=-sqrt(x-3)
          9=x-3
          12=x
          http://www.youtube.com/watch?v=IREnpHco9mw

            Comment

            • foilman8805
              smoke wheat hail satin
              FFR Simfile Author
              • Sep 2006
              • 5704
              #4
              Re: High school Jr. Algebra Quadratic Equations

              Hahaha, I was looking at dan's work and I was like...oooh! There's an i! How excit - oh. He did it wrong.

              DJ_Okami, just to clarify, dore's post is the correct answer.

                Comment

                • ~kitty~
                  FFR Player
                  • Jun 2007
                  • 988
                  #5
                  Re: [High School - Algebra] Quadratic Equations

                  Originally posted by DJ_Okami
                  I need help with this question. I'm not sure how to start it off. Any help will be greatly apperciated:
                  Find the solutions to the following equation algebraically, and verify your solution(s).

                  0 = 3 - squareroot (x-3)
                  wow, that's easy

                    Comment

                    • Relambrien
                      FFR Player
                      • Dec 2006
                      • 1644
                      #6
                      Re: [High School - Algebra] Quadratic Equations

                      Here's a bit of a more in-depth explanation

                      0 = 3 - root(x-3) ------------ Given in problem
                      -3 = -root(x-3) ------------ Subtract three from each side
                      9 = x-3 --------------------- Square each side (the -root is irrelevant in terms of squaring, as it just denotes the negative square root rather than the positive, and ends up squaring to the same thing)
                      12 = x ---------------------- Add three to both sides.

                        Comment

                        • dandandamdandan1111
                          the baker man
                          • Jun 2007
                          • 2176
                          #7
                          Re: [High School - Algebra] Quadratic Equations

                          Lol. I had 12 as my first answer, then I did it and got -6 for some reason. If I had done it on paper, I probably would've gotten it.

                            Comment

                            • DJ_Okami
                              FFR Player
                              • Feb 2007
                              • 2
                              #8
                              Re: [High School - Algebra] Quadratic Equations

                              thanks guys, i suck at math...
                              screw this

                                Comment

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