an=2n^2-4n

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Solution for an=2n^2-4n equation: 


Simplifying
an = 2n2 + -4n

Reorder the terms:
an = -4n + 2n2

Solving
an = -4n + 2n2

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Divide each side by 'n'.
a = -4 + 2n

Simplifying
a = -4 + 2n

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