What were two of the ways transportation changed in the early 1800s?

Explanation:

The border was connected to the eastern regions by waterways and an increasing infrastructure of railroads. From either the farmland to the docks, produce was transported by small boats across riverbeds. Large sailing ships transported goods and people between ports. Railroads grew to link cities, allowing everyone to travel more quickly.

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