10x2+30x=-2x2-30x-75

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Solution for 10x2+30x=-2x2-30x-75 equation: 



10x^2+30x=-2x^2-30x-75

We move all terms to the left:

10x^2+30x-(-2x^2-30x-75)=0

We get rid of parentheses

10x^2+2x^2+30x+30x+75=0

We add all the numbers together, and all the variables

12x^2+60x+75=0

a = 12; b = 60; c = +75;
Δ = b2-4ac
Δ = 602-4·12·75
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{-60}{24}=-2+1/2$

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