The real part of the complex number `9 + sqrt ( - 16 )` is ​

Write the complex number: sqrt(-16)

Write the complex number: 4+sqrt(-5)

Write the complex number: 1+sqrt(-1)

Write the complex number: 5-7sqrt(-21)

Write the complex number: -1-sqrt(-5)

The real part of the complex number z satisfying |z-1-2i|le1 and having the least positive argument, is

Find the set of points on the argand plane for which the real part of the complex number (1 + i)z^2 is positive where z = x + iy, x , y in R and i = sqrt(-1 ) .

Write the real and imaginary part of the complex number: (sqrt(17))/(2)+i(2)/(sqrt(70))

What is the real part of the number 5i?

Write the complex number: sqrt(x),(x>0)