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48q+9q^2=-64
We move all terms to the left:
48q+9q^2-(-64)=0
We add all the numbers together, and all the variables
9q^2+48q+64=0
a = 9; b = 48; c = +64;
Δ = b2-4ac
Δ = 482-4·9·64
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$q=\frac{-b}{2a}=\frac{-48}{18}=-2+2/3$
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