Question

21-20i square root......................​

Answer 1

Hey mate

Hey mate Your question is wrong

Answer 2

We know that all square roots of this number will satisfy the equation 21-20i=x2 by definition of a square root. We also know that x can be expressed as a+bi (where a and b are real) since the square roots of a complex number are always complex. So 21-20i=(a+bi)2.