Munurin millum rættingarnar hjá "Algebra"

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Linja 16:
: <math>2x+4x-5x</math> kann verða umstytt til <math>x</math>
* Potensar

: <math>a^m\cdot\,\!a^n=a^{m^+n}</math>

: <math>a^m:a^n=a^{m-n}</math>

: <math>a^0=1</math>
 givið at <math>a\neq 0</math>