(5x-12.5)(5x-12.5)=0

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Solution for (5x-12.5)(5x-12.5)=0 equation: 



(5x-12.5)(5x-12.5)=0

We multiply parentheses ..

(+25x^2-62.5x-62.5x+156.25)=0

We get rid of parentheses

25x^2-62.5x-62.5x+156.25=0

We add all the numbers together, and all the variables

25x^2-125x+156.25=0

a = 25; b = -125; c = +156.25;
Δ = b2-4ac
Δ = -1252-4·25·156.25
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{125}{50}=2+1/2$

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