4. I am a region or a district of the United States not admitted to the Union as a state. What am I?

I'd say Washington D.C.

Explanation:

It's not a state, it's a district I believe, and is part of the U.S.

territory. a region or district of the U.S. not admitted to the Union as a state but having its own territorial government under the direction of the President.

Explanation:

answer

explanation

the given equation is

we can rewrite this as:

let

then the equation becomes:

the factors of 8 that sum up to -9 are {-1,-8}

we split the middle term with these factors to obtain,

we factor by grouping to obtain:

apply the zero product property to get:

but