E=(3a+8)(3a-8)-64

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Solution for E=(3a+8)(3a-8)-64 equation: 



=(3E+8)(3E-8)-64

We move all terms to the left:

-((3E+8)(3E-8)-64)=0

We use the square of the difference formula

9E^2+64=0

a = 9; b = 0; c = +64;
Δ = b2-4ac
Δ = 02-4·9·64
Δ = -2304
Delta is less than zero, so there is no solution for the equation

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