(7+4i)(3-2i)=0

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Solution for (7+4i)(3-2i)=0 equation:


Simplifying
(7 + 4i)(3 + -2i) = 0

Multiply (7 + 4i) * (3 + -2i)
(7(3 + -2i) + 4i * (3 + -2i)) = 0
((3 * 7 + -2i * 7) + 4i * (3 + -2i)) = 0
((21 + -14i) + 4i * (3 + -2i)) = 0
(21 + -14i + (3 * 4i + -2i * 4i)) = 0
(21 + -14i + (12i + -8i2)) = 0

Combine like terms: -14i + 12i = -2i
(21 + -2i + -8i2) = 0

Solving
21 + -2i + -8i2 = 0

Solving for variable 'i'.

Factor a trinomial.
(3 + -2i)(7 + 4i) = 0

Subproblem 1

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

Subproblem 2

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

Solution

i = {1.5, -1.75}

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