(5x+2)(5x-2)=-4

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Solution for (5x+2)(5x-2)=-4 equation: 



(5x+2)(5x-2)=-4

We move all terms to the left:

(5x+2)(5x-2)-(-4)=0

We add all the numbers together, and all the variables

(5x+2)(5x-2)+4=0

We use the square of the difference formula

25x^2-4+4=0

We add all the numbers together, and all the variables

25x^2=0

a = 25; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·25·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{0}{50}=0$

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