Z^4-2z^2=15

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Solution for Z^4-2z^2=15 equation: 



^4-2Z^2=15

We move all terms to the left:

^4-2Z^2-(15)=0

determiningTheFunctionDomain
-2Z^2-15+^4=0

We add all the numbers together, and all the variables

-2Z^2=0

a = -2; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-2)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$Z=\frac{-b}{2a}=\frac{0}{-4}=0$

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