(2x+13)(2x+13)=0

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Solution for (2x+13)(2x+13)=0 equation: 



(2x+13)(2x+13)=0

We multiply parentheses ..

(+4x^2+26x+26x+169)=0

We get rid of parentheses

4x^2+26x+26x+169=0

We add all the numbers together, and all the variables

4x^2+52x+169=0

a = 4; b = 52; c = +169;
Δ = b2-4ac
Δ = 522-4·4·169
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{-52}{8}=-6+1/2$

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