7x^4 - 14x^3 - 28x

The greatest common factor of this trinomial is?

7x

7

7x^2

7x^3

7x

Step-by-step explanation:

if you divide all of them by 7x, you get

x^3 - 2x^2 - 4

There are no other factors.

The first two have a factor of x, but the last one doesn't

the last two have a factor of 2, but the first one doesn't

The greatest common factor is 7x