How did new technologies affect motion pictures in the 1920s?

Motion pictures were now produced exclusively in color.
Motion pictures could now be viewed at home.
Motion pictures could now be shown in sports stadiums.
Motion pictures could now be produced with sound.

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

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the correct answer is: the fact that the anti-federalist papers were considered poorly written.