Take a look at the following letter written by abraham lincoln. what indicates that it is a primary source?

a letter written by abraham lincoln in 1854

the letter is dated.
it is a handwritten document.
the letter looks old.
abraham lincoln was the president in 1854.

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

answer: (fluidity)is the correct answer.

explanation: because of this characteristic, success on the battlefield depends in large part on the ability to adapt to proactively change events to our advantage as well as to react quickly to constantly changing conditions