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Simplifying j2 + 2j + -15 = 0 Reorder the terms: -15 + 2j + j2 = 0 Solving -15 + 2j + j2 = 0 Solving for variable 'j'. Factor a trinomial. (-5 + -1j)(3 + -1j) = 0Subproblem 1
Set the factor '(-5 + -1j)' equal to zero and attempt to solve: Simplifying -5 + -1j = 0 Solving -5 + -1j = 0 Move all terms containing j to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -1j = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1j = 0 + 5 -1j = 0 + 5 Combine like terms: 0 + 5 = 5 -1j = 5 Divide each side by '-1'. j = -5 Simplifying j = -5Subproblem 2
Set the factor '(3 + -1j)' equal to zero and attempt to solve: Simplifying 3 + -1j = 0 Solving 3 + -1j = 0 Move all terms containing j to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1j = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1j = 0 + -3 -1j = 0 + -3 Combine like terms: 0 + -3 = -3 -1j = -3 Divide each side by '-1'. j = 3 Simplifying j = 3Solution
j = {-5, 3}
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