x^2-2y^2=1

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Solution for x^2-2y^2=1 equation:


Simplifying
x2 + -2y2 = 1

Solving
x2 + -2y2 = 1

Solving for variable 'x'.

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

Add '2y2' to each side of the equation.
x2 + -2y2 + 2y2 = 1 + 2y2

Combine like terms: -2y2 + 2y2 = 0
x2 + 0 = 1 + 2y2
x2 = 1 + 2y2

Simplifying
x2 = 1 + 2y2

Reorder the terms:
-1 + x2 + -2y2 = 1 + 2y2 + -1 + -2y2

Reorder the terms:
-1 + x2 + -2y2 = 1 + -1 + 2y2 + -2y2

Combine like terms: 1 + -1 = 0
-1 + x2 + -2y2 = 0 + 2y2 + -2y2
-1 + x2 + -2y2 = 2y2 + -2y2

Combine like terms: 2y2 + -2y2 = 0
-1 + x2 + -2y2 = 0

Factor a trinomial.
(x + -2y)(x + y) = 0

Subproblem 1

Set the factor '(x + -2y)' equal to zero and attempt to solve: Simplifying x + -2y = 0 Solving x + -2y = 0 Move all terms containing x to the left, all other terms to the right. Add '2y' to each side of the equation. x + -2y + 2y = 0 + 2y Combine like terms: -2y + 2y = 0 x + 0 = 0 + 2y x = 0 + 2y Remove the zero: x = 2y Simplifying x = 2y

Subproblem 2

Set the factor '(x + y)' equal to zero and attempt to solve: Simplifying x + y = 0 Solving x + y = 0 Move all terms containing x to the left, all other terms to the right. Add '-1y' to each side of the equation. x + y + -1y = 0 + -1y Combine like terms: y + -1y = 0 x + 0 = 0 + -1y x = 0 + -1y Remove the zero: x = -1y Simplifying x = -1y

Solution

x = {2y, -1y}

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