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

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


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

Multiply (-4 + -8i) * (-3 + -4i)
(-4(-3 + -4i) + -8i * (-3 + -4i)) = 0
((-3 * -4 + -4i * -4) + -8i * (-3 + -4i)) = 0
((12 + 16i) + -8i * (-3 + -4i)) = 0
(12 + 16i + (-3 * -8i + -4i * -8i)) = 0
(12 + 16i + (24i + 32i2)) = 0

Combine like terms: 16i + 24i = 40i
(12 + 40i + 32i2) = 0

Solving
12 + 40i + 32i2 = 0

Solving for variable 'i'.

Factor out the Greatest Common Factor (GCF), '4'.
4(3 + 10i + 8i2) = 0

Factor a trinomial.
4((3 + 4i)(1 + 2i)) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(3 + 4i)' equal to zero and attempt to solve: Simplifying 3 + 4i = 0 Solving 3 + 4i = 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 + 4i = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 4i = 0 + -3 4i = 0 + -3 Combine like terms: 0 + -3 = -3 4i = -3 Divide each side by '4'. i = -0.75 Simplifying i = -0.75

Subproblem 2

Set the factor '(1 + 2i)' equal to zero and attempt to solve: Simplifying 1 + 2i = 0 Solving 1 + 2i = 0 Move all terms containing i to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 2i = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 2i = 0 + -1 2i = 0 + -1 Combine like terms: 0 + -1 = -1 2i = -1 Divide each side by '2'. i = -0.5 Simplifying i = -0.5

Solution

i = {-0.75, -0.5}

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