X^2-x-2x^2-2x=0

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Solution for X^2-x-2x^2-2x=0 equation: 


Simplifying
X2 + -1x + -2x2 + -2x = 0

Reorder the terms:
X2 + -1x + -2x + -2x2 = 0

Combine like terms: -1x + -2x = -3x
X2 + -3x + -2x2 = 0

Solving
X2 + -3x + -2x2 = 0

Solving for variable 'X'.

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

Add '3x' to each side of the equation.
X2 + -3x + 3x + -2x2 = 0 + 3x

Combine like terms: -3x + 3x = 0
X2 + 0 + -2x2 = 0 + 3x
X2 + -2x2 = 0 + 3x
Remove the zero:
X2 + -2x2 = 3x

Add '2x2' to each side of the equation.
X2 + -2x2 + 2x2 = 3x + 2x2

Combine like terms: -2x2 + 2x2 = 0
X2 + 0 = 3x + 2x2
X2 = 3x + 2x2

Simplifying
X2 = 3x + 2x2

Reorder the terms:
X2 + -3x + -2x2 = 3x + -3x + 2x2 + -2x2

Combine like terms: 3x + -3x = 0
X2 + -3x + -2x2 = 0 + 2x2 + -2x2
X2 + -3x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
X2 + -3x + -2x2 = 0

The solution to this equation could not be determined.

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