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y^2+7+21=11
We move all terms to the left:
y^2+7+21-(11)=0
We add all the numbers together, and all the variables
y^2+17=0
a = 1; b = 0; c = +17;
Δ = b2-4ac
Δ = 02-4·1·17
Δ = -68
Delta is less than zero, so there is no solution for the equation
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