What is celebrated on november 11th,1954

Armistice Day

Explanation:

November 11 was commemorated as Armistice Day in the United States, but  British Commonwealth countries now call the holiday Remembrance Day.

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