then x + y is equal to
-2/5
6/5
2/5
-6/5
Write as as complex number
None of these
The modulus of is
2
√2
3
√3
The number of non-zero integral solutions of the equation |1-i|x = 2x is represented on the y axis (imaginary axis)
infinite
1
The real part of the complex number is
1/5
-1/5
5
Express in the standard form .
1-3i
1+ 3i
-1-3i
If distance between directrices of a rectangular hyperbola is 10, then distance between its foci will be
10√2
5√2
20
The imaginary part of is
4/5
0
-(4/5)
If x = 3 + i, then x3 - 3 x2 - 8 x + 15 is equal to
6
10
45
-15
If Z1=2 + i, Z2 = 3 - 2i and Z3 = -1/2 + √3/2 then the conjugate of z1z2 is
i
8 + i
8 - i
6 - i
