f(4a)=x^2-4

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Solution for f(4a)=x^2-4 equation: 


Simplifying
f(4a) = x2 + -4

Remove parenthesis around (4a)
f * 4a = x2 + -4

Reorder the terms for easier multiplication:
4f * a = x2 + -4

Multiply f * a
4af = x2 + -4

Reorder the terms:
4af = -4 + x2

Solving
4af = -4 + x2

Solving for variable 'a'.

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

Divide each side by '4f'.
a = -1f-1 + 0.25f-1x2

Simplifying
a = -1f-1 + 0.25f-1x2

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