x^2-7=x^4-5

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Solution for x^2-7=x^4-5 equation:


Simplifying
x2 + -7 = x4 + -5

Reorder the terms:
-7 + x2 = x4 + -5

Reorder the terms:
-7 + x2 = -5 + x4

Solving
-7 + x2 = -5 + x4

Solving for variable 'x'.

Reorder the terms:
-7 + 5 + x2 + -1x4 = -5 + x4 + 5 + -1x4

Combine like terms: -7 + 5 = -2
-2 + x2 + -1x4 = -5 + x4 + 5 + -1x4

Reorder the terms:
-2 + x2 + -1x4 = -5 + 5 + x4 + -1x4

Combine like terms: -5 + 5 = 0
-2 + x2 + -1x4 = 0 + x4 + -1x4
-2 + x2 + -1x4 = x4 + -1x4

Combine like terms: x4 + -1x4 = 0
-2 + x2 + -1x4 = 0

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

Divide each side by '-1'.
2 + -1x2 + x4 = 0

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -1x2 + -2 + x4 = 0 + -2

Reorder the terms:
2 + -2 + -1x2 + x4 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -1x2 + x4 = 0 + -2
-1x2 + x4 = 0 + -2

Combine like terms: 0 + -2 = -2
-1x2 + x4 = -2

The x term is x2.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x2 + 0.25 + x4 = -2 + 0.25

Reorder the terms:
0.25 + -1x2 + x4 = -2 + 0.25

Combine like terms: -2 + 0.25 = -1.75
0.25 + -1x2 + x4 = -1.75

Factor a perfect square on the left side:
(x2 + 0.5)(x2 + 0.5) = -1.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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