0 votes 0 votes (3 + i)/(5 + 5i) is same as a. (2 - i)/5 b. 3 - i c. 5 - 5i d. (2 + i)/5 Linear Algebra isro-ece isro2011-ece engineering-mathematics linear-algebra + – sh!va asked Feb 28, 2017 • edited Mar 10, 2019 by Naveen Kumar 3 sh!va 434 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes Multiply denominator and numerator by (5 - 5i), the process is called rationalization in mathematics. Remember i * i = (-1). Denominator changes to form of a2-b2 i.e 50. Numerator is (20 - 10i). Solving further, we get Option (a). Rohit Ranjan answered Feb 28, 2017 Rohit Ranjan comment Share Follow See all 0 reply Please log in or register to add a comment.