China's relationship with the koreas during this time period was
a. one of political control
b. positive trade
c. spreading of buddhism
d. completely conquering the region
bed

can you post options?

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