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$\\simplify{{a[1]}({a[2]}x+{a[3]})}=$ [[0]]

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It doesn't look like you've expanded - make sure you don't use any brackets in your answer.

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$\\simplify{{a[13]}x*({a[14]}x^2+{a[15]}x+{a[16]})}=$ [[0]]

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Regn ut, skriv svaret uten parentes:

\n

Bruk ^ for å skrive en potens, f. eks skriver du a^3 for å få $a^3$

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