Express in the form .
Answer and explanation
Correct answer: D.
- Step 1: Multiply the numerator and denominator by the conjugate of the denominator, . Step 2. The denominator becomes , and the numerator simplifies so that the quotient is . **Answer: . Why not the others:** : The imaginary part has the wrong sign. : The real part has the wrong sign. : The real and imaginary parts are swapped.
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