When selecting a primary source, it is important to A. find a secondary source to back it up. B. determine its authenticity. C. create your own bias. D. exclude oral interviews.

B. Determine its authenticity.

it was important because it showed that america was a force to be reckoned with during the cold war.

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