4x^2-x^4=25

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Solution for 4x^2-x^4=25 equation:


Simplifying
4x2 + -1x4 = 25

Solving
4x2 + -1x4 = 25

Solving for variable 'x'.

Reorder the terms:
-25 + 4x2 + -1x4 = 25 + -25

Combine like terms: 25 + -25 = 0
-25 + 4x2 + -1x4 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
25 + -4x2 + x4 = 0

Move the constant term to the right:

Add '-25' to each side of the equation.
25 + -4x2 + -25 + x4 = 0 + -25

Reorder the terms:
25 + -25 + -4x2 + x4 = 0 + -25

Combine like terms: 25 + -25 = 0
0 + -4x2 + x4 = 0 + -25
-4x2 + x4 = 0 + -25

Combine like terms: 0 + -25 = -25
-4x2 + x4 = -25

The x term is -4x2.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x2 + 4 + x4 = -25 + 4

Reorder the terms:
4 + -4x2 + x4 = -25 + 4

Combine like terms: -25 + 4 = -21
4 + -4x2 + x4 = -21

Factor a perfect square on the left side:
(x2 + -2)(x2 + -2) = -21

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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