Which country controlled vietnam prior to the vietnam war

France was a country which controlled Vietnam prior to the Vietnam War as their protectorate.

Explanation:

After WWII, Vietnam won independence but France still controlled the country until Nguyễn Tất Thành took over in 1954. In 1959, North Vietnam launched and forced a system to reunify the country, which pointed to an outbreak of the American War in Vietnam in the early 1960s. It was a close result of the First Indochina War (1946–1954) within France, which maintained Vietnam as a colony, and the communist forces .In 1973 a “third” Vietnam war began a continuation, actually within North and South Vietnam but without significant U.S. preoccupation.

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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