Why are some presidents elected by an electoral college

Answer:

Presidential elections use the 'Electoral College' to elect some presidents instead of allowing people or Congress to elect the president directly  because the founding fathers of electoral college was afraid of direct election for electing the president. Hence, Some presidents are elected by an electoral college.

Explanation:

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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