D-7=q2

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Solution for D-7=q2 equation: 



-7=D2

We move all terms to the left:

-7-(D2)=0

We add all the numbers together, and all the variables

-1D^2-7=0

a = -1; b = 0; c = -7;
Δ = b2-4ac
Δ = 02-4·(-1)·(-7)
Δ = -28
Delta is less than zero, so there is no solution for the equation

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