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Simplifying (2 + -5i)(2 + -5i) = 0 Multiply (2 + -5i) * (2 + -5i) (2(2 + -5i) + -5i * (2 + -5i)) = 0 ((2 * 2 + -5i * 2) + -5i * (2 + -5i)) = 0 ((4 + -10i) + -5i * (2 + -5i)) = 0 (4 + -10i + (2 * -5i + -5i * -5i)) = 0 (4 + -10i + (-10i + 25i2)) = 0 Combine like terms: -10i + -10i = -20i (4 + -20i + 25i2) = 0 Solving 4 + -20i + 25i2 = 0 Solving for variable 'i'. Factor a trinomial. (2 + -5i)(2 + -5i) = 0Subproblem 1
Set the factor '(2 + -5i)' equal to zero and attempt to solve: Simplifying 2 + -5i = 0 Solving 2 + -5i = 0 Move all terms containing i to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -5i = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -5i = 0 + -2 -5i = 0 + -2 Combine like terms: 0 + -2 = -2 -5i = -2 Divide each side by '-5'. i = 0.4 Simplifying i = 0.4Subproblem 2
Set the factor '(2 + -5i)' equal to zero and attempt to solve: Simplifying 2 + -5i = 0 Solving 2 + -5i = 0 Move all terms containing i to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -5i = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -5i = 0 + -2 -5i = 0 + -2 Combine like terms: 0 + -2 = -2 -5i = -2 Divide each side by '-5'. i = 0.4 Simplifying i = 0.4Solution
i = {0.4, 0.4}
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