Question

let z= 11-3i/1+i if a is real number such that z-ia is real then find the value of a​

Answer 1

Answer:

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Answer 2

Answer:

Step-by-step explanation:

Z=11-3i/1+i. (Multiply and divide by 1-i)

Now, z=11-3i×1-i/1+i×1-i

(11-11i-3i+3i)/1+1

11-3-14i/2

8-14i/2

4-7i

Now, we have z-ia=4-7i

By comparing a =7