What is a quartic polynomial function with rational coefficients that has roots i and 2i
a)x^4-5x^2-4
b)none
c)x^4+5x^2+4
d) x^4+5x^2-4
e)x^4-5x^2+4

answer: 1 2 3 6

step-by-step explanation:

1x6=6 2x3=6

did you get the answer yet?

step-by-step explanation:

the highest percentage for deaths in construction from highest to lowest is as follows: falls, struck by objects, electrocution, and caught-in/between. these four are collectively known as fatal four.

in the case of falls, the type that is responsible for the overall highest death in the category is falls from roofs.