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8a^2-16a+58=-5
We move all terms to the left:
8a^2-16a+58-(-5)=0
We add all the numbers together, and all the variables
8a^2-16a+63=0
a = 8; b = -16; c = +63;
Δ = b2-4ac
Δ = -162-4·8·63
Δ = -1760
Delta is less than zero, so there is no solution for the equation
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