(2x-y)(2x+y)=15

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Solution for (2x-y)(2x+y)=15 equation:


Simplifying
(2x + -1y)(2x + y) = 15

Multiply (2x + -1y) * (2x + y)
(2x * (2x + y) + -1y * (2x + y)) = 15
((2x * 2x + y * 2x) + -1y * (2x + y)) = 15

Reorder the terms:
((2xy + 4x2) + -1y * (2x + y)) = 15
((2xy + 4x2) + -1y * (2x + y)) = 15
(2xy + 4x2 + (2x * -1y + y * -1y)) = 15
(2xy + 4x2 + (-2xy + -1y2)) = 15

Reorder the terms:
(2xy + -2xy + 4x2 + -1y2) = 15

Combine like terms: 2xy + -2xy = 0
(0 + 4x2 + -1y2) = 15
(4x2 + -1y2) = 15

Solving
4x2 + -1y2 = 15

Solving for variable 'x'.

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

Add 'y2' to each side of the equation.
4x2 + -1y2 + y2 = 15 + y2

Combine like terms: -1y2 + y2 = 0
4x2 + 0 = 15 + y2
4x2 = 15 + y2

Divide each side by '4'.
x2 = 3.75 + 0.25y2

Simplifying
x2 = 3.75 + 0.25y2

Reorder the terms:
-3.75 + x2 + -0.25y2 = 3.75 + 0.25y2 + -3.75 + -0.25y2

Reorder the terms:
-3.75 + x2 + -0.25y2 = 3.75 + -3.75 + 0.25y2 + -0.25y2

Combine like terms: 3.75 + -3.75 = 0.00
-3.75 + x2 + -0.25y2 = 0.00 + 0.25y2 + -0.25y2
-3.75 + x2 + -0.25y2 = 0.25y2 + -0.25y2

Combine like terms: 0.25y2 + -0.25y2 = 0.00
-3.75 + x2 + -0.25y2 = 0.00

The solution to this equation could not be determined.

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