(6-8i)(2+7i)=

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Solution for (6-8i)(2+7i)= equation:


Simplifying
(6 + -8i)(2 + 7i) = 0

Multiply (6 + -8i) * (2 + 7i)
(6(2 + 7i) + -8i * (2 + 7i)) = 0
((2 * 6 + 7i * 6) + -8i * (2 + 7i)) = 0
((12 + 42i) + -8i * (2 + 7i)) = 0
(12 + 42i + (2 * -8i + 7i * -8i)) = 0
(12 + 42i + (-16i + -56i2)) = 0

Combine like terms: 42i + -16i = 26i
(12 + 26i + -56i2) = 0

Solving
12 + 26i + -56i2 = 0

Solving for variable 'i'.

Factor out the Greatest Common Factor (GCF), '2'.
2(6 + 13i + -28i2) = 0

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

Ignore the factor 2.

Subproblem 1

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

Subproblem 2

Set the factor '(2 + 7i)' equal to zero and attempt to solve: Simplifying 2 + 7i = 0 Solving 2 + 7i = 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 + 7i = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 7i = 0 + -2 7i = 0 + -2 Combine like terms: 0 + -2 = -2 7i = -2 Divide each side by '7'. i = -0.2857142857 Simplifying i = -0.2857142857

Solution

i = {0.75, -0.2857142857}

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