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4u^2+5u=-180
We move all terms to the left:
4u^2+5u-(-180)=0
We add all the numbers together, and all the variables
4u^2+5u+180=0
a = 4; b = 5; c = +180;
Δ = b2-4ac
Δ = 52-4·4·180
Δ = -2855
Delta is less than zero, so there is no solution for the equation
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