(x-7.25)(x-7.25)=0

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Solution for (x-7.25)(x-7.25)=0 equation: 



(x-7.25)(x-7.25)=0

We multiply parentheses ..

(+x^2-7.25x-7.25x+52.5625)=0

We get rid of parentheses

x^2-7.25x-7.25x+52.5625=0

We add all the numbers together, and all the variables

x^2-14.5x+52.5625=0

a = 1; b = -14.5; c = +52.5625;
Δ = b2-4ac
Δ = -14.52-4·1·52.5625
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{14.5}{2}=7+0.5/2$

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