Pls help 3/4n = 15 help

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

You are measuring the dimensions of the floor in your bedroom because you are planning to buy new carpet. which unit of measure is the most appropriate to use in this situation?

In the given figure ar(adf) =ar(cda) and ar(cdf) = ar(cdf). show that abdc and cdfe are trapeziums.