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2p^2-8p+19=p2+6p-30
We move all terms to the left:
2p^2-8p+19-(p2+6p-30)=0
We add all the numbers together, and all the variables
2p^2-(+p^2+6p-30)-8p+19=0
We get rid of parentheses
2p^2-p^2-6p-8p+30+19=0
We add all the numbers together, and all the variables
p^2-14p+49=0
a = 1; b = -14; c = +49;
Δ = b2-4ac
Δ = -142-4·1·49
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$p=\frac{-b}{2a}=\frac{14}{2}=7$
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