(X-1.5)(x-1.5)=0

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Solution for (X-1.5)(x-1.5)=0 equation: 



(X-1.5)(X-1.5)=0

We multiply parentheses ..

(+X^2-1.5X-1.5X+2.25)=0

We get rid of parentheses

X^2-1.5X-1.5X+2.25=0

We add all the numbers together, and all the variables

X^2-3X+2.25=0

a = 1; b = -3; c = +2.25;
Δ = b2-4ac
Δ = -32-4·1·2.25
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$X=\frac{-b}{2a}=\frac{3}{2}=1+1/2$

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