Math, asked by mohine458, 1 month ago

Question 2
If z1=
1+i and z2 = 1- i then find (z1z2).​

Answers

Answered by sharmadishant79
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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