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-7p+8p^2=-18
We move all terms to the left:
-7p+8p^2-(-18)=0
We add all the numbers together, and all the variables
8p^2-7p+18=0
a = 8; b = -7; c = +18;
Δ = b2-4ac
Δ = -72-4·8·18
Δ = -527
Delta is less than zero, so there is no solution for the equation
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