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11k^2-10k+11=4
We move all terms to the left:
11k^2-10k+11-(4)=0
We add all the numbers together, and all the variables
11k^2-10k+7=0
a = 11; b = -10; c = +7;
Δ = b2-4ac
Δ = -102-4·11·7
Δ = -208
Delta is less than zero, so there is no solution for the equation
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