(6x+7)(6x+7)=0

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Solution for (6x+7)(6x+7)=0 equation: 



(6x+7)(6x+7)=0

We multiply parentheses ..

(+36x^2+42x+42x+49)=0

We get rid of parentheses

36x^2+42x+42x+49=0

We add all the numbers together, and all the variables

36x^2+84x+49=0

a = 36; b = 84; c = +49;
Δ = b2-4ac
Δ = 842-4·36·49
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{-84}{72}=-1+1/6$

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