Answer:
2x5y2−8x4y2−18x3y2+5x2y2−20xy2−45y2
Step-by-step explanation:
y2(2x3+5)(x2−4x−9)
=(y2(2x3+5))(x2+−4x+−9)
=(y2(2x3+5))(x2)+(y2(2x3+5))(−4x)+(y2(2x3+5))(−9)
=2x5y2+5x2y2−8x4y2−20xy2−18x3y2−45y2
=2x5y2−8x4y2−18x3y2+5x2y2−20xy2−45y2
If this is not it, I don't know what is.
Hope this helps! :)
