Answer:
(8x²+7y²–z²+2yz+3xz–5xy) × ( 2x–3y)
= (16x³+14xy²–2z²x+4yzx+6x²z–10x²y –24yx²–21y³+3z²y–6y²z–9xzy+15xy²)
=( 16x³+29xy²–2z²x–5xyz+6x²z–34x²y–21y³+3z²y–6y²z)

I hope I helped you^_^
to solve you would have to divide 1 into 8. So using long division the answer would be 0.125
It would be 7 out of 11 because there are 8 marbles and you only took out one white marble
Mathematical models are helpful. Advantages include helping you see the data clearer and helping you visualize. Disadvantages are: time consuming, and if you make a mistake on the graph, its going to hit the entre thing.
Eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee