What early valley civilization emerged from a area called the “cradle of civilization “

The valley civilization was called Mesopotamia.

Hope this helps, Kam

answer; people where able to travel across the u.s.a faster than any other mode of transportation,travel time was about a week,from coast to coast

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