Question 9.7: If z1 = 2 − 2j and z2 = 3 + 4j, find z1z2....
If z_1 = 2 − 2j and z_2 = 3 + 4j, find z_1z_2.
Step-by-Step
z_1z_2 = (2 − 2j)(3 + 4j)
Removing brackets we find
z_1z_2 = 6−6j+8j−8j²
= 6−6j+8j+8 using j² = −1
= 14+2j
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