(4+1)(2-I)=

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Solution for (4+1)(2-I)= equation:


Simplifying
(4 + 1)(2 + -1I) = 0

Combine like terms: 4 + 1 = 5
(5)(2 + -1I) = 0
(2 * 5 + -1I * 5) = 0
(10 + -5I) = 0

Solving
10 + -5I = 0

Solving for variable 'I'.

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

Add '-10' to each side of the equation.
10 + -10 + -5I = 0 + -10

Combine like terms: 10 + -10 = 0
0 + -5I = 0 + -10
-5I = 0 + -10

Combine like terms: 0 + -10 = -10
-5I = -10

Divide each side by '-5'.
I = 2

Simplifying
I = 2

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