Complex Numbers
Which of the following complex numbers is equal to √−80 – √−125?
i√5
2i+3j
(2,3)
[4 2] - [2 1]
[2 1]
Which of the following complex numbers is equal to i−1/i+1?
i
(5i-2j)
(5,-2)
[5 3] + [7 2]
[12 5]
Which of the following is equal to the sum of the complex numbers (2+i)2(2+i)2 and (2−i)2(2−i)2 ?
6
-2i+3j
(-2,3)
[4 7 3] - [2 5 -1]
[2 2 4]
Which of the following equations has roots at 2, 2i and −2i ?
(x−2)(x^2+4)
-1i-7j
(-1,-7)