In 939 the vietnamese finally gained independence from china and it lasted until invaded in the 19th century

mesopotamian code of hammurabi

and i think its 1860 b.c. you mean lol

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