=(8-4i)(3-2i)

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Solution for =(8-4i)(3-2i) equation:


Simplifying
0 = (8 + -4i)(3 + -2i)

Multiply (8 + -4i) * (3 + -2i)
0 = (8(3 + -2i) + -4i * (3 + -2i))
0 = ((3 * 8 + -2i * 8) + -4i * (3 + -2i))
0 = ((24 + -16i) + -4i * (3 + -2i))
0 = (24 + -16i + (3 * -4i + -2i * -4i))
0 = (24 + -16i + (-12i + 8i2))

Combine like terms: -16i + -12i = -28i
0 = (24 + -28i + 8i2)

Solving
0 = 24 + -28i + 8i2

Solving for variable 'i'.

Combine like terms: 0 + -24 = -24
-24 + 28i + -8i2 = 24 + -28i + 8i2 + -24 + 28i + -8i2

Reorder the terms:
-24 + 28i + -8i2 = 24 + -24 + -28i + 28i + 8i2 + -8i2

Combine like terms: 24 + -24 = 0
-24 + 28i + -8i2 = 0 + -28i + 28i + 8i2 + -8i2
-24 + 28i + -8i2 = -28i + 28i + 8i2 + -8i2

Combine like terms: -28i + 28i = 0
-24 + 28i + -8i2 = 0 + 8i2 + -8i2
-24 + 28i + -8i2 = 8i2 + -8i2

Combine like terms: 8i2 + -8i2 = 0
-24 + 28i + -8i2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-6 + 7i + -2i2) = 0

Factor a trinomial.
4((-2 + i)(3 + -2i)) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(-2 + i)' equal to zero and attempt to solve: Simplifying -2 + i = 0 Solving -2 + i = 0 Move all terms containing i to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + i = 0 + 2 Combine like terms: -2 + 2 = 0 0 + i = 0 + 2 i = 0 + 2 Combine like terms: 0 + 2 = 2 i = 2 Simplifying i = 2

Subproblem 2

Set the factor '(3 + -2i)' equal to zero and attempt to solve: Simplifying 3 + -2i = 0 Solving 3 + -2i = 0 Move all terms containing i to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -2i = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -2i = 0 + -3 -2i = 0 + -3 Combine like terms: 0 + -3 = -3 -2i = -3 Divide each side by '-2'. i = 1.5 Simplifying i = 1.5

Solution

i = {2, 1.5}

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