3a²n−1

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$3a^2n−1$

$3a^2n-1=0$

$3a^2n-1+1=0+1$

$3a^2n=1$

$\frac{3a^2n}{3a^2}=\frac{1}{3a^2};\:a\ne \:0$

$n=\frac{1}{3a^2};\:\:a\ne \:\:0$

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Question ID: mtid-5-stid-8-sqid-2664-qpid-1134