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5t(2t-1)=-5
We move all terms to the left:
5t(2t-1)-(-5)=0
We add all the numbers together, and all the variables
5t(2t-1)+5=0
We multiply parentheses
10t^2-5t+5=0
a = 10; b = -5; c = +5;
Δ = b2-4ac
Δ = -52-4·10·5
Δ = -175
Delta is less than zero, so there is no solution for the equation
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