Question

Use the grouping method to factor the polynomial in the box completely.

16x^9 + 28x^5 + 20x^4

Answer 1

The only thing I can see coming of that is a 4 from the numbers, and an x^4 from the x's.
it would look like this:
\[16x^9+28x^5+20x^4 \Rightarrow 4x^4(4x^5+7x+5)\]