Who, what, when, where, and why are elements of

Historic cases conveys to incidents that happened in the history and that are considered and described by archaeologists according to data such as reports, images, artifacts, documentation, and others, in this way, to discovered how these incidents happened it is essential not only to assume the activities and involved in these (what), but the people or entities concerned (who), the area or place of the events (where), the ideas or conditions (why) and the time or age of these circumstances (when).

Due to this reason, who, what, when, where and why are elements of historical events, as it is crucial to respond to all these issues to actually understand, study or communicate a traditional event.

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