f(a)=4+8x^2

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Solution for f(a)=4+8x^2 equation: 


Simplifying
f(a) = 4 + 8x2

Multiply f * a
af = 4 + 8x2

Solving
af = 4 + 8x2

Solving for variable 'a'.

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

Divide each side by 'f'.
a = 4f-1 + 8f-1x2

Simplifying
a = 4f-1 + 8f-1x2

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