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HVORDAN LØSE EN LIKNING
       Av Tina og Lise
2X(X-1) -X(X+4)


    Regnerekkefølge:
Først løs opp parentesene.
     Ganger og deler
      Pluss og minus
HVORDAN LØSE OPP PARENTES?


                              2x(x-1) -x(x+4)
                    For å løse opp en parentes må du:
   Hvis det er et + foran parentesen er det ikke andre endringer enn at
                            parantesen fjernes.

     Hvis det er kun et – foran parentesen blir + til - inni paranetsen
Hvis det ikke er noe tegn, som i likningen over, er det automatisk gange (*).
Da skal tallet foran parentesen ganges med begge tallene/bokstavene inni,
                                     slik:
                            2x*x–2x*1 –x*x+x*4
X^2


        For å løse denne likningen må vi vite at:
             x*x = x^2 (x opphøyd i andre)
Dette gjør regnestykket mer oversiktlig og lettere å regne.
Å LØSE LIKNINGEN


        Slik løser man denne likningen:
                 2x(x-1) -x(x+4)
               2x*x-2x*1 –x*x-x*4
                2x^2-2x –x^2-4x
x^2 skal IKKE regnes med x (de er to forskjellige tall)
               -2x -4x +2x^2 -x^2
                    -6x +x^2
GRATULERER, DU HAR LØST EN
        LIKNING!
           YEAH

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Hvordan lose en likning

  • 1. HVORDAN LØSE EN LIKNING Av Tina og Lise
  • 2. 2X(X-1) -X(X+4) Regnerekkefølge: Først løs opp parentesene. Ganger og deler Pluss og minus
  • 3. HVORDAN LØSE OPP PARENTES? 2x(x-1) -x(x+4) For å løse opp en parentes må du: Hvis det er et + foran parentesen er det ikke andre endringer enn at parantesen fjernes. Hvis det er kun et – foran parentesen blir + til - inni paranetsen Hvis det ikke er noe tegn, som i likningen over, er det automatisk gange (*). Da skal tallet foran parentesen ganges med begge tallene/bokstavene inni, slik: 2x*x–2x*1 –x*x+x*4
  • 4. X^2 For å løse denne likningen må vi vite at: x*x = x^2 (x opphøyd i andre) Dette gjør regnestykket mer oversiktlig og lettere å regne.
  • 5. Å LØSE LIKNINGEN Slik løser man denne likningen: 2x(x-1) -x(x+4) 2x*x-2x*1 –x*x-x*4 2x^2-2x –x^2-4x x^2 skal IKKE regnes med x (de er to forskjellige tall) -2x -4x +2x^2 -x^2 -6x +x^2
  • 6. GRATULERER, DU HAR LØST EN LIKNING! YEAH