7=7+d2

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Solution for 7=7+d2 equation: 



7=7+d2

We move all terms to the left:

7-(7+d2)=0

We add all the numbers together, and all the variables

-(+d^2+7)+7=0

We get rid of parentheses

-d^2-7+7=0

We add all the numbers together, and all the variables

-1d^2=0

a = -1; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-1)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$d=\frac{-b}{2a}=\frac{0}{-2}=0$

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