SAT Math : How to subtract complex numbers

Study concepts, example questions & explanations for SAT Math

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Example Questions

Example Question #1 : Complex Numbers

From , subtract its complex conjugate. What is the difference ?

Possible Answers:

Correct answer:

Explanation:

The complex conjugate of a complex number  is , so  has  as its complex conjugate. Subtract the latter from the former:

Example Question #2 : Complex Numbers

From , subtract its complex conjugate.

Possible Answers:

Correct answer:

Explanation:

The complex conjugate of a complex number  is . Therefore, the complex conjugate of  is ; subtract the latter from the former by subtracting real parts and subtracting imaginary parts, as follows:

Example Question #3 : Complex Numbers

From , subtract its complex conjugate.

Possible Answers:

Correct answer:

Explanation:

The complex conjugate of a complex number  is . Therefore, the complex conjugate of  is ; subtract the latter from the former by subtracting real parts and subtracting imaginary parts, as follows:

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