a^2-10a+27=2

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Solution for a^2-10a+27=2 equation: 



a^2-10a+27=2

We move all terms to the left:

a^2-10a+27-(2)=0

We add all the numbers together, and all the variables

a^2-10a+25=0

a = 1; b = -10; c = +25;
Δ = b2-4ac
Δ = -102-4·1·25
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$a=\frac{-b}{2a}=\frac{10}{2}=5$

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