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6x^2+60x=-150
We move all terms to the left:
6x^2+60x-(-150)=0
We add all the numbers together, and all the variables
6x^2+60x+150=0
a = 6; b = 60; c = +150;
Δ = b2-4ac
Δ = 602-4·6·150
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$x=\frac{-b}{2a}=\frac{-60}{12}=-5$
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