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2u^2+4u+19=(+4)^2
We move all terms to the left:
2u^2+4u+19-((+4)^2)=0
We add all the numbers together, and all the variables
2u^2+4u+19-(4^2)=0
We add all the numbers together, and all the variables
2u^2+4u+3=0
a = 2; b = 4; c = +3;
Δ = b2-4ac
Δ = 42-4·2·3
Δ = -8
Delta is less than zero, so there is no solution for the equation
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