Do you know The Great Wall of China is the greatest construction project in the history of human civilization. It was built more than 2,000 years ago during the Spring and Autumn Period and the Warring States Period. After the Qin Dynasty unified China, it became the Great Wall. It was built on a large scale in the Han and Ming dynasties.

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where is question? its just explanation of great wall of china.

the answer would be a i think?

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