p and q are complex numbers such that ∣∣q∣∣=4√5 and ∣∣p+q∣∣ =9√2.
On what interval must ∣∣p∣∣ fall on?
[9√2+4√5,∞)
[9√10/20,∞)
[2√10/9,∞)
[9√2−4√5,∞)
how do I figure this out?
