Suppose w and z are complex numbers. If the real part of wz equals the real part of w times the real part of z, then either w or z is a real number.

Question

Quizplus · Accepted Answer

If the real part of the product of two complex numbers equals the product of their real parts, it implies that the imaginary parts do not contribute to the real part of the product, which occurs when at least one of the numbers is real.

Suppose W and Z Are Complex Numbers