x^2-ax-a^2=0

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Solution for x^2-ax-a^2=0 equation:


Simplifying
x2 + -1ax + -1a2 = 0

Reorder the terms:
-1ax + -1a2 + x2 = 0

Solving
-1ax + -1a2 + x2 = 0

Solving for variable 'a'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
ax + a2 + -1x2 = 0

Move the constant term to the right:

Add '-1x2' to each side of the equation.
ax + a2 + -1x2 + -1x2 = 0 + -1x2

Combine like terms: -1x2 + -1x2 = -2x2
ax + a2 + -2x2 = 0 + -1x2
Remove the zero:
ax + a2 + -2x2 = -1x2

The a term is ax.  Take half its coefficient (0.5x).
Square it (0.25x2) and add it to both sides.

Add '0.25x2' to each side of the equation.
x2 + a2 + -2x2 + 0.25x2 = -1x2 + 0.25x2

Reorder the terms:
a2 + x2 + -2x2 + 0.25x2 = -1x2 + 0.25x2

Combine like terms: x2 + -2x2 = -1x2
a2 + -1x2 + 0.25x2 = -1x2 + 0.25x2

Combine like terms: -1x2 + 0.25x2 = -0.75x2
a2 + -0.75x2 = -1x2 + 0.25x2

Combine like terms: -1x2 + 0.25x2 = -0.75x2
a2 + -0.75x2 = -0.75x2

Factor a perfect square on the left side:
(a + 0.5x)(a + 0.5x) = -0.75x2

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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