What is x^2+4=0 over the set of complex numbers?

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315

Elizabeth is using a sample to study american alligators. she plots the lengths of their tails against their total lengths to find the relationship between the two attributes. which point is an outlier in this data set?