Hvorfor bruger vi ikke x som symbol for multiplikation?
I algebra bruger vi ikke x som et gange tegn, da det er nemt at forveksle med variablen x. I stedet skrives 2⋅x, 2(x) eller 2x. Se her, hvordan vi erstatter en variabel i et algebraisk udtryk med et tal og udregner værdien af udtrykket. Lavet af Sal Khan.
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