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Evaluate (10 – 41) ÷ (5 + 1).

Evaluate (10 – 41) ÷ (5 + 1).-example-1
User Swietyy
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2 Answers

5 votes

Explanation:

option B is correct answer

User Carcaret
by
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3 votes


\((10 - 4i) / (5 + i) = (23)/(13)-(15i)/(13), which can be further simplified if needed.

To evaluate the expression
\((10 - 4i) / (5 + i)\), we'll multiply both the numerator and denominator by the conjugate of the denominator to rationalize the denominator.

The conjugate of
\(5 + i\) is \(5 - i\).


\((10 - 4i) / (5 + i) = ((10 - 4i) * (5 - i))/((5 + i) * (5 - i))\)

Let's perform the multiplication:

Numerator:


\[ (10 - 4i) * (5 - i) = 50 - 10i - 20i + 4i^2 \]


\[ = 50 - 30i - 4 \] (Remember that \(i^2 = -1\))


\[ = 46 - 30i \]

Denominator:


\[ (5 + i) * (5 - i) = 25 - 5i + 5i - i^2 \]


\[ = 25 - i^2 \]


\[ = 25 + 1 \]


\[ = 26 \]

Now, simplify the expression:


\[ ((10 - 4i) / (5 + i))/((5 + i) / (5 - i)) = (46 - 30i)/(26) =(23)/(13) -(15i)/(13)

User Negra
by
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