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64v^2=-81
We move all terms to the left:
64v^2-(-81)=0
We add all the numbers together, and all the variables
64v^2+81=0
a = 64; b = 0; c = +81;
Δ = b2-4ac
Δ = 02-4·64·81
Δ = -20736
Delta is less than zero, so there is no solution for the equation
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