-b^2=36-12b

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Solution for -b^2=36-12b equation: 



-b^2=36-12b

We move all terms to the left:

-b^2-(36-12b)=0

We add all the numbers together, and all the variables

-b^2-(-12b+36)=0

We add all the numbers together, and all the variables

-1b^2-(-12b+36)=0

We get rid of parentheses

-1b^2+12b-36=0

a = -1; b = 12; c = -36;
Δ = b2-4ac
Δ = 122-4·(-1)·(-36)
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$b=\frac{-b}{2a}=\frac{-12}{-2}=+6$

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