(x+2i)(x-2i)=-x^2-4

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Solution for (x+2i)(x-2i)=-x^2-4 equation:


Simplifying
(x + 2i)(x + -2i) = -1x2 + -4

Reorder the terms:
(2i + x)(x + -2i) = -1x2 + -4

Reorder the terms:
(2i + x)(-2i + x) = -1x2 + -4

Multiply (2i + x) * (-2i + x)
(2i * (-2i + x) + x(-2i + x)) = -1x2 + -4
((-2i * 2i + x * 2i) + x(-2i + x)) = -1x2 + -4

Reorder the terms:
((2ix + -4i2) + x(-2i + x)) = -1x2 + -4
((2ix + -4i2) + x(-2i + x)) = -1x2 + -4
(2ix + -4i2 + (-2i * x + x * x)) = -1x2 + -4
(2ix + -4i2 + (-2ix + x2)) = -1x2 + -4

Reorder the terms:
(2ix + -2ix + -4i2 + x2) = -1x2 + -4

Combine like terms: 2ix + -2ix = 0
(0 + -4i2 + x2) = -1x2 + -4
(-4i2 + x2) = -1x2 + -4

Reorder the terms:
-4i2 + x2 = -4 + -1x2

Solving
-4i2 + x2 = -4 + -1x2

Solving for variable 'i'.

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

Add '-1x2' to each side of the equation.
-4i2 + x2 + -1x2 = -4 + -1x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-4i2 + 0 = -4 + -1x2 + -1x2
-4i2 = -4 + -1x2 + -1x2

Combine like terms: -1x2 + -1x2 = -2x2
-4i2 = -4 + -2x2

Divide each side by '-4'.
i2 = 1 + 0.5x2

Simplifying
i2 = 1 + 0.5x2

Reorder the terms:
-1 + i2 + -0.5x2 = 1 + 0.5x2 + -1 + -0.5x2

Reorder the terms:
-1 + i2 + -0.5x2 = 1 + -1 + 0.5x2 + -0.5x2

Combine like terms: 1 + -1 = 0
-1 + i2 + -0.5x2 = 0 + 0.5x2 + -0.5x2
-1 + i2 + -0.5x2 = 0.5x2 + -0.5x2

Combine like terms: 0.5x2 + -0.5x2 = 0.0
-1 + i2 + -0.5x2 = 0.0

The solution to this equation could not be determined.

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