(3-8i)(5+i)=

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Solution for (3-8i)(5+i)= equation:


Simplifying
(3 + -8i)(5 + i) = 0

Multiply (3 + -8i) * (5 + i)
(3(5 + i) + -8i * (5 + i)) = 0
((5 * 3 + i * 3) + -8i * (5 + i)) = 0
((15 + 3i) + -8i * (5 + i)) = 0
(15 + 3i + (5 * -8i + i * -8i)) = 0
(15 + 3i + (-40i + -8i2)) = 0

Combine like terms: 3i + -40i = -37i
(15 + -37i + -8i2) = 0

Solving
15 + -37i + -8i2 = 0

Solving for variable 'i'.

Factor a trinomial.
(3 + -8i)(5 + i) = 0

Subproblem 1

Set the factor '(3 + -8i)' equal to zero and attempt to solve: Simplifying 3 + -8i = 0 Solving 3 + -8i = 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 + -8i = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -8i = 0 + -3 -8i = 0 + -3 Combine like terms: 0 + -3 = -3 -8i = -3 Divide each side by '-8'. i = 0.375 Simplifying i = 0.375

Subproblem 2

Set the factor '(5 + i)' equal to zero and attempt to solve: Simplifying 5 + i = 0 Solving 5 + i = 0 Move all terms containing i to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + i = 0 + -5 Combine like terms: 5 + -5 = 0 0 + i = 0 + -5 i = 0 + -5 Combine like terms: 0 + -5 = -5 i = -5 Simplifying i = -5

Solution

i = {0.375, -5}

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