Question

Multiply (6 – 5i)2.Question 20 options:A) 11 – 60iB) 36 – 25iC) 11 + 60iD) 36 + 25i

Answer 1

Multiply (6 – 5i)2

Apply distributive property

6(2)+(-5i)(2)

12-10i

the answer is

12-10i

Part 2

we have

(6-5i)^2

so

(6)^2-2(6)(5i)+(5i)^2

36-60i+25i^2

Remember that

i^2=-1

substitute

36-60i+25(-1)

36-60i-25

combine like terms

11-60i

the answer is option A