(5-7i)(4+I)=

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Solution for (5-7i)(4+I)= equation:


Simplifying
(5 + -7i)(4 + I) = 0

Multiply (5 + -7i) * (4 + I)
(5(4 + I) + -7i * (4 + I)) = 0
((4 * 5 + I * 5) + -7i * (4 + I)) = 0
((20 + 5I) + -7i * (4 + I)) = 0
(20 + 5I + (4 * -7i + I * -7i)) = 0
(20 + 5I + (-28i + -7iI)) = 0
(20 + 5I + -28i + -7iI) = 0

Solving
20 + 5I + -28i + -7iI = 0

Solving for variable 'I'.

Move all terms containing I to the left, all other terms to the right.

Add '-20' to each side of the equation.
20 + 5I + -28i + -20 + -7iI = 0 + -20

Reorder the terms:
20 + -20 + 5I + -28i + -7iI = 0 + -20

Combine like terms: 20 + -20 = 0
0 + 5I + -28i + -7iI = 0 + -20
5I + -28i + -7iI = 0 + -20

Combine like terms: 0 + -20 = -20
5I + -28i + -7iI = -20

Add '28i' to each side of the equation.
5I + -28i + 28i + -7iI = -20 + 28i

Combine like terms: -28i + 28i = 0
5I + 0 + -7iI = -20 + 28i
5I + -7iI = -20 + 28i

Reorder the terms:
20 + 5I + -28i + -7iI = -20 + 28i + 20 + -28i

Reorder the terms:
20 + 5I + -28i + -7iI = -20 + 20 + 28i + -28i

Combine like terms: -20 + 20 = 0
20 + 5I + -28i + -7iI = 0 + 28i + -28i
20 + 5I + -28i + -7iI = 28i + -28i

Combine like terms: 28i + -28i = 0
20 + 5I + -28i + -7iI = 0

The solution to this equation could not be determined.

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