(7x-5)(7x+5)=-25

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Solution for (7x-5)(7x+5)=-25 equation: 



(7x-5)(7x+5)=-25

We move all terms to the left:

(7x-5)(7x+5)-(-25)=0

We add all the numbers together, and all the variables

(7x-5)(7x+5)+25=0

We use the square of the difference formula

49x^2-25+25=0

We add all the numbers together, and all the variables

49x^2=0

a = 49; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·49·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{0}{98}=0$

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