By dropping acorns, and spreading them to other areas by animals and wind.
You have a lot of questions here, I can help you with a few of them.
When you simplify the polynomials, you put together all of the terms that have the same degree. That means the variables have the same exponents. The number of terms are the items separated by plus and minus signs.
Here are the answers for the first three:
1)
![8x^3+2x^2-3x+9 ](https://tex.z-dn.net/?f=8x%5E3%2B2x%5E2-3x%2B9%0A)
2)
![4w^2 + 14w + 17](https://tex.z-dn.net/?f=4w%5E2%20%2B%2014w%20%2B%2017)
3)
Rules of exponents and the distributive property apply.
(x+y)² = (x+y)·(x+y) . . . . . meaning of exponent of 2
= x·(x+y) +y·(x+y) . . . . . . . distributive property
= x·x +x·y +y·x +y·y . . . . . distributive property
= x² +x·y +x·y +y² . . . . . . meaning of exponent of 2, commutative property of multiplication
= x² +(1+1)·x·y +y² . . . . . . distributive property
= x²+2xy+y² . . . . . . . . . the desired form
Thus
(x+y)² = x²+2xy+y²
Answer:
so far i think 9 but that's all I know for how
Step-by-step explanation:
image them turning into triangles