f(a)=a^2-4

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


Simplifying
f(a) = a2 + -4

Multiply f * a
af = a2 + -4

Reorder the terms:
af = -4 + a2

Solving
af = -4 + a2

Solving for variable 'a'.

Reorder the terms:
4 + af + -1a2 = -4 + a2 + 4 + -1a2

Reorder the terms:
4 + af + -1a2 = -4 + 4 + a2 + -1a2

Combine like terms: -4 + 4 = 0
4 + af + -1a2 = 0 + a2 + -1a2
4 + af + -1a2 = a2 + -1a2

Combine like terms: a2 + -1a2 = 0
4 + af + -1a2 = 0

The solution to this equation could not be determined.

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