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-5+x2=-9
We move all terms to the left:
-5+x2-(-9)=0
We add all the numbers together, and all the variables
x^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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