(3+2i)(7-5i)=

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Solution for (3+2i)(7-5i)= equation:


Simplifying
(3 + 2i)(7 + -5i) = 0

Multiply (3 + 2i) * (7 + -5i)
(3(7 + -5i) + 2i * (7 + -5i)) = 0
((7 * 3 + -5i * 3) + 2i * (7 + -5i)) = 0
((21 + -15i) + 2i * (7 + -5i)) = 0
(21 + -15i + (7 * 2i + -5i * 2i)) = 0
(21 + -15i + (14i + -10i2)) = 0

Combine like terms: -15i + 14i = -1i
(21 + -1i + -10i2) = 0

Solving
21 + -1i + -10i2 = 0

Solving for variable 'i'.

Factor a trinomial.
(7 + -5i)(3 + 2i) = 0

Subproblem 1

Set the factor '(7 + -5i)' equal to zero and attempt to solve: Simplifying 7 + -5i = 0 Solving 7 + -5i = 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 + -5i = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -5i = 0 + -7 -5i = 0 + -7 Combine like terms: 0 + -7 = -7 -5i = -7 Divide each side by '-5'. i = 1.4 Simplifying i = 1.4

Subproblem 2

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

Solution

i = {1.4, -1.5}

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