X^2+20=-4X

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Solution for X^2+20=-4X equation:


Simplifying
X2 + 20 = -4X

Reorder the terms:
20 + X2 = -4X

Solving
20 + X2 = -4X

Solving for variable 'X'.

Reorder the terms:
20 + 4X + X2 = -4X + 4X

Combine like terms: -4X + 4X = 0
20 + 4X + X2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-20' to each side of the equation.
20 + 4X + -20 + X2 = 0 + -20

Reorder the terms:
20 + -20 + 4X + X2 = 0 + -20

Combine like terms: 20 + -20 = 0
0 + 4X + X2 = 0 + -20
4X + X2 = 0 + -20

Combine like terms: 0 + -20 = -20
4X + X2 = -20

The X term is 4X.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4X + 4 + X2 = -20 + 4

Reorder the terms:
4 + 4X + X2 = -20 + 4

Combine like terms: -20 + 4 = -16
4 + 4X + X2 = -16

Factor a perfect square on the left side:
(X + 2)(X + 2) = -16

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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