(-20/2X)^2-x^2=21

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Solution for (-20/2X)^2-x^2=21 equation: 



(-20/2X)^2-X^2=21

We move all terms to the left:

(-20/2X)^2-X^2-(21)=0



Domain of the equation: 2X)^2!=0

X!=0/1

X!=0

X∈R



We add all the numbers together, and all the variables

-1X^2+(-20/2X)^2-21=0

We multiply all the terms by the denominator


-1X^2*2X)^2+(-21*2X)^2-20=0

Wy multiply elements

-2X^3-42X=0

We do not support eXpression: X^3

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