4^2+x^2=8

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Solution for 4^2+x^2=8 equation: 



4^2+x^2=8

We move all terms to the left:

4^2+x^2-(8)=0

determiningTheFunctionDomain
x^2-8+4^2=0

We add all the numbers together, and all the variables

x^2+8=0

a = 1; b = 0; c = +8;
Δ = b2-4ac
Δ = 02-4·1·8
Δ = -32
Delta is less than zero, so there is no solution for the equation

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