X^2=-X-10

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Solution for X^2=-X-10 equation:


Simplifying
X2 = -1X + -10

Reorder the terms:
X2 = -10 + -1X

Solving
X2 = -10 + -1X

Solving for variable 'X'.

Reorder the terms:
10 + X + X2 = -10 + -1X + 10 + X

Reorder the terms:
10 + X + X2 = -10 + 10 + -1X + X

Combine like terms: -10 + 10 = 0
10 + X + X2 = 0 + -1X + X
10 + X + X2 = -1X + X

Combine like terms: -1X + X = 0
10 + X + X2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-10' to each side of the equation.
10 + X + -10 + X2 = 0 + -10

Reorder the terms:
10 + -10 + X + X2 = 0 + -10

Combine like terms: 10 + -10 = 0
0 + X + X2 = 0 + -10
X + X2 = 0 + -10

Combine like terms: 0 + -10 = -10
X + X2 = -10

The X term is X.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
X + 0.25 + X2 = -10 + 0.25

Reorder the terms:
0.25 + X + X2 = -10 + 0.25

Combine like terms: -10 + 0.25 = -9.75
0.25 + X + X2 = -9.75

Factor a perfect square on the left side:
(X + 0.5)(X + 0.5) = -9.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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