Question 2
If z1=
1+i and z2 = 1- i then find (z1z2).
Answers
Answered by
1
Answer:
2
Step-by-step explanation:
z1=1+i , z2 = 1- i
z1z2 = (1+I)(1-i)
z1z2 = (1²) - (i²) { (a²) - (b²) = (a+b)(a-b) }
z1z2 = (1) - (i²)
z1z2 = (1) - (-1) { i² = -1 }
z1z2 = 1 + 1
z1z2 = 2
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