Simplifying

51y2 -2580y -39879

First, you need to reorder the terms then factor the GCF that will be 3

3(-13293 + -860y + 17y2)

then factor a trinomial

3[(-211 -17y)(63 -y)]so the final result is3(-211-17y)(63 -y)

i'm not sure bout this. i just tried. you can check it.