Question

br />\sf if \: z = 2 + i.then \: (z - 1)( \overset - {z} - 5) + ( \overset - z - 1)(z - 5) \: is \: whatifz=2+i.then(z−1)( z − −5)+( z − −1)(z−5)iswhat
a) 2
b) 7
c) -1
d) -4​

Answer 1

Answer:

4

Explanation:

answer is (D) because it's invalid questions