(-4i+3)(-i-12)=

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Solution for (-4i+3)(-i-12)= equation:


Simplifying
(-4i + 3)(-1i + -12) = 0

Reorder the terms:
(3 + -4i)(-1i + -12) = 0

Reorder the terms:
(3 + -4i)(-12 + -1i) = 0

Multiply (3 + -4i) * (-12 + -1i)
(3(-12 + -1i) + -4i * (-12 + -1i)) = 0
((-12 * 3 + -1i * 3) + -4i * (-12 + -1i)) = 0
((-36 + -3i) + -4i * (-12 + -1i)) = 0
(-36 + -3i + (-12 * -4i + -1i * -4i)) = 0
(-36 + -3i + (48i + 4i2)) = 0

Combine like terms: -3i + 48i = 45i
(-36 + 45i + 4i2) = 0

Solving
-36 + 45i + 4i2 = 0

Solving for variable 'i'.

Factor a trinomial.
(-12 + -1i)(3 + -4i) = 0

Subproblem 1

Set the factor '(-12 + -1i)' equal to zero and attempt to solve: Simplifying -12 + -1i = 0 Solving -12 + -1i = 0 Move all terms containing i to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + -1i = 0 + 12 Combine like terms: -12 + 12 = 0 0 + -1i = 0 + 12 -1i = 0 + 12 Combine like terms: 0 + 12 = 12 -1i = 12 Divide each side by '-1'. i = -12 Simplifying i = -12

Subproblem 2

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

Solution

i = {-12, 0.75}

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