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x2=-625
We move all terms to the left:
x2-(-625)=0
We add all the numbers together, and all the variables
x^2+625=0
a = 1; b = 0; c = +625;
Δ = b2-4ac
Δ = 02-4·1·625
Δ = -2500
Delta is less than zero, so there is no solution for the equation
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