Which expression correctly shows 20x4−25x3+60x2−75x factored completely over the integers?

a: 5x(x2−3)(4x+5)
b: 5x(x2+3)(4x−5)
c: 5x2(x+4)(3x−5)
d: (x2+3)(4x−5)

How many zeros does the function f(x)=4x3-x2+1 have

Asegment in the complex plane has a midpoint at 7 – 2i. if the segment has an endpoint at 11 – 3i, what is the other endpoint?

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?