65-255x^2-4x^4=0

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Solution for 65-255x^2-4x^4=0 equation:


Simplifying
65 + -255x2 + -4x4 = 0

Solving
65 + -255x2 + -4x4 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
-16.25 + 63.75x2 + x4 = 0

Move the constant term to the right:

Add '16.25' to each side of the equation.
-16.25 + 63.75x2 + 16.25 + x4 = 0 + 16.25

Reorder the terms:
-16.25 + 16.25 + 63.75x2 + x4 = 0 + 16.25

Combine like terms: -16.25 + 16.25 = 0.00
0.00 + 63.75x2 + x4 = 0 + 16.25
63.75x2 + x4 = 0 + 16.25

Combine like terms: 0 + 16.25 = 16.25
63.75x2 + x4 = 16.25

The x term is 63.75x2.  Take half its coefficient (31.875).
Square it (1016.015625) and add it to both sides.

Add '1016.015625' to each side of the equation.
63.75x2 + 1016.015625 + x4 = 16.25 + 1016.015625

Reorder the terms:
1016.015625 + 63.75x2 + x4 = 16.25 + 1016.015625

Combine like terms: 16.25 + 1016.015625 = 1032.265625
1016.015625 + 63.75x2 + x4 = 1032.265625

Factor a perfect square on the left side:
(x2 + 31.875)(x2 + 31.875) = 1032.265625

Calculate the square root of the right side: 32.128890815

Break this problem into two subproblems by setting 
(x2 + 31.875) equal to 32.128890815 and -32.128890815.

Subproblem 1

x2 + 31.875 = 32.128890815 Simplifying x2 + 31.875 = 32.128890815 Reorder the terms: 31.875 + x2 = 32.128890815 Solving 31.875 + x2 = 32.128890815 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-31.875' to each side of the equation. 31.875 + -31.875 + x2 = 32.128890815 + -31.875 Combine like terms: 31.875 + -31.875 = 0.000 0.000 + x2 = 32.128890815 + -31.875 x2 = 32.128890815 + -31.875 Combine like terms: 32.128890815 + -31.875 = 0.253890815 x2 = 0.253890815 Simplifying x2 = 0.253890815 Take the square root of each side: x = {-0.503875793, 0.503875793}

Subproblem 2

x2 + 31.875 = -32.128890815 Simplifying x2 + 31.875 = -32.128890815 Reorder the terms: 31.875 + x2 = -32.128890815 Solving 31.875 + x2 = -32.128890815 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-31.875' to each side of the equation. 31.875 + -31.875 + x2 = -32.128890815 + -31.875 Combine like terms: 31.875 + -31.875 = 0.000 0.000 + x2 = -32.128890815 + -31.875 x2 = -32.128890815 + -31.875 Combine like terms: -32.128890815 + -31.875 = -64.003890815 x2 = -64.003890815 Simplifying x2 = -64.003890815 Reorder the terms: 64.003890815 + x2 = -64.003890815 + 64.003890815 Combine like terms: -64.003890815 + 64.003890815 = 0.000000000 64.003890815 + x2 = 0.000000000 The solution to this equation could not be determined.This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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