PSAT Math Multiple-Choice Question 600: Answer and Explanation
Question: 600
What is an equivalent form of the following expression
- A.
- B.
- C.
- D.
Correct Answer: D
Explanation:
(D) A common way to simplify expressions with imaginary numbers is to multiply both the numerator and the denominator by the conjugate of the denominator. Doing so allows you to eliminate the imaginary components from the denominator. For , the conjugate is 5 + i. Simplify as follows:
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