(-7-4i)(-6-6i)=0

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Solution for (-7-4i)(-6-6i)=0 equation:


Simplifying
(-7 + -4i)(-6 + -6i) = 0

Multiply (-7 + -4i) * (-6 + -6i)
(-7(-6 + -6i) + -4i * (-6 + -6i)) = 0
((-6 * -7 + -6i * -7) + -4i * (-6 + -6i)) = 0
((42 + 42i) + -4i * (-6 + -6i)) = 0
(42 + 42i + (-6 * -4i + -6i * -4i)) = 0
(42 + 42i + (24i + 24i2)) = 0

Combine like terms: 42i + 24i = 66i
(42 + 66i + 24i2) = 0

Solving
42 + 66i + 24i2 = 0

Solving for variable 'i'.

Factor out the Greatest Common Factor (GCF), '6'.
6(7 + 11i + 4i2) = 0

Factor a trinomial.
6((7 + 4i)(1 + i)) = 0

Ignore the factor 6.

Subproblem 1

Set the factor '(7 + 4i)' equal to zero and attempt to solve: Simplifying 7 + 4i = 0 Solving 7 + 4i = 0 Move all terms containing i to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 4i = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 4i = 0 + -7 4i = 0 + -7 Combine like terms: 0 + -7 = -7 4i = -7 Divide each side by '4'. i = -1.75 Simplifying i = -1.75

Subproblem 2

Set the factor '(1 + i)' equal to zero and attempt to solve: Simplifying 1 + i = 0 Solving 1 + i = 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 + i = 0 + -1 Combine like terms: 1 + -1 = 0 0 + i = 0 + -1 i = 0 + -1 Combine like terms: 0 + -1 = -1 i = -1 Simplifying i = -1

Solution

i = {-1.75, -1}

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