Write in the form .
Answer and explanation
Correct answer: B.
- Step 1: Multiply top and bottom by the conjugate : the denominator is . Step 2. Numerator: . Step 3. Result: . **Answer: . Why not the others:** : The sign of the imaginary part is wrong. : This multiplies by instead of its conjugate: . : The denominator should be , and the numerator is .
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