A=(x-2)(x+2)

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Solution for A=(x-2)(x+2) equation: 



=(A-2)(A+2)

We move all terms to the left:

-((A-2)(A+2))=0

We use the square of the difference formula

A^2+4=0

a = 1; b = 0; c = +4;
Δ = b2-4ac
Δ = 02-4·1·4
Δ = -16
Delta is less than zero, so there is no solution for the equation

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