Will give and 50 pts
1. x+x^2y+x^3y^2 2. 3p^2r^2+6pr+p

1. x(x^2y^2 + xy + 1)

2. p(3pr^2 + 6r + 1)

Step-by-step explanation:

1.

x + x^2y + x^3y^2 =

First, try factoring out a common factor. x is a common factor.

= x(1 + xy + x^2y^2)

Now, write the trinomial in descending order of degree.

= x(x^2y^2 + xy + 1)

x^2y^2 is the square of xy.

1 is the square of 1.

2 * xy * 1 = 2xy. The middle term is just xy, so the trinomial is not factorable.

x(x^2y^2 + xy + 1)

2.

3p^2r^2 + 6pr + p =

Factor out the common factor, p.

= p(3pr^2 + 6r + 1)

there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."