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5u^2+2u+u+8=0
We add all the numbers together, and all the variables
5u^2+3u+8=0
a = 5; b = 3; c = +8;
Δ = b2-4ac
Δ = 32-4·5·8
Δ = -151
Delta is less than zero, so there is no solution for the equation
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