Question

If one root of the quadratic equation, i{{x}^{2}}-2(i+1)x+(2-i)=0
is 2-i
, then the other root is
A) - i B) i C) 2+i D) 2-i

Answer 1

if any quadratic equation has complex or imaginary roots then the are conjuate to eachother such a+ib , a-ib so the answer is 2+i