Question

Find the common factor of all the terms 20y^3 - 5y^2 + 45y... would it be positive or negative 5?

Answer 1

the common factor is 5y

Answer 2

5y(4y^2-y+7)

Answer 3

20y^3 - 5y^2 + 45y=5y(4y^2-y+9)
one root y=0 and ..4y^2-y+9 will have imaginary roots