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(2x-1)(2x+1)=4x*4x-1
We move all terms to the left:
(2x-1)(2x+1)-(4x*4x-1)=0
We use the square of the difference formula
4x^2-(4x*4x-1)-1=0
We get rid of parentheses
4x^2-4x*4x+1-1=0
We add all the numbers together, and all the variables
4x^2-4x*4x=0
Wy multiply elements
4x^2-16x^2=0
We add all the numbers together, and all the variables
-12x^2=0
a = -12; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-12)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$x=\frac{-b}{2a}=\frac{0}{-24}=0$
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