(5y+4x)dx+(2x+y)dy=0

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Solution for (5y+4x)dx+(2x+y)dy=0 equation: 


Simplifying
(5y + 4x) * dx + (2x + y) * dy = 0

Reorder the terms:
(4x + 5y) * dx + (2x + y) * dy = 0

Reorder the terms for easier multiplication:
dx(4x + 5y) + (2x + y) * dy = 0
(4x * dx + 5y * dx) + (2x + y) * dy = 0

Reorder the terms:
(5dxy + 4dx2) + (2x + y) * dy = 0
(5dxy + 4dx2) + (2x + y) * dy = 0

Reorder the terms for easier multiplication:
5dxy + 4dx2 + dy(2x + y) = 0
5dxy + 4dx2 + (2x * dy + y * dy) = 0
5dxy + 4dx2 + (2dxy + dy2) = 0

Reorder the terms:
5dxy + 2dxy + 4dx2 + dy2 = 0

Combine like terms: 5dxy + 2dxy = 7dxy
7dxy + 4dx2 + dy2 = 0

Solving
7dxy + 4dx2 + dy2 = 0

Solving for variable 'd'.

Move all terms containing d to the left, all other terms to the right.

Factor out the Greatest Common Factor (GCF), 'd'.
d(7xy + 4x2 + y2) = 0


Subproblem 1
Set the factor 'd' equal to zero and attempt to solve:

Simplifying
d = 0

Solving
d = 0

Move all terms containing d to the left, all other terms to the right.

Simplifying
d = 0

Subproblem 2
Set the factor '(7xy + 4x2 + y2)' equal to zero and attempt to solve:

Simplifying
7xy + 4x2 + y2 = 0

Solving
7xy + 4x2 + y2 = 0

Move all terms containing d to the left, all other terms to the right.

Add '-7xy' to each side of the equation.
7xy + 4x2 + -7xy + y2 = 0 + -7xy

Reorder the terms:
7xy + -7xy + 4x2 + y2 = 0 + -7xy

Combine like terms: 7xy + -7xy = 0
0 + 4x2 + y2 = 0 + -7xy
4x2 + y2 = 0 + -7xy
Remove the zero:
4x2 + y2 = -7xy

Add '-4x2' to each side of the equation.
4x2 + -4x2 + y2 = -7xy + -4x2

Combine like terms: 4x2 + -4x2 = 0
0 + y2 = -7xy + -4x2
y2 = -7xy + -4x2

Add '-1y2' to each side of the equation.
y2 + -1y2 = -7xy + -4x2 + -1y2

Combine like terms: y2 + -1y2 = 0
0 = -7xy + -4x2 + -1y2

Simplifying
0 = -7xy + -4x2 + -1y2

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.
Solution
d = {0}

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