Answer:
638
Step-by-step explanation:
its 638, not 639 because its above 638.5
Answer:
20.
Given, complex number is 10+5i .
We need to find sum of the given complex number and its conjugate. The conjugate of 10+5i is 10-5i. Therefore, the sum will be 10+5i+10−5i=20.
Answer:
(1,-2)
Step-by-step explanation:
w = ( x , y ) = ( 1 , -2 )
3rd choice
No,because a multiplcative inverse is when your changing a division or multiplcation sign!
