0.8x^2+12x-8=-2x-69.25

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Solution for 0.8x^2+12x-8=-2x-69.25 equation: 



0.8x^2+12x-8=-2x-69.25

We move all terms to the left:

0.8x^2+12x-8-(-2x-69.25)=0

We get rid of parentheses

0.8x^2+12x+2x+69.25-8=0

We add all the numbers together, and all the variables

0.8x^2+14x+61.25=0

a = 0.8; b = 14; c = +61.25;
Δ = b2-4ac
Δ = 142-4·0.8·61.25
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{-14}{1.6}=-8+1/1.33333333333$

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