The answer would be 20x^9 + 15x^6 - 40x^4
Answer:
[tex]5x^4\left(4x^5+3x^2-8\right)[/tex]
[tex]5x^4\left(4x^5+3x^2-8\right)=5x^4\cdot \:4x^5+5x^4\cdot \:3x^2+5x^4\left(-8\right)[/tex]
[tex]=5x^4\cdot \:4x^5+5x^4\cdot \:3x^2+5x^4\left(-8\right)[/tex]
[tex]=20x^9+15x^6-40x^4[/tex]
OAmalOHopeO
