What was zheng he’s most important accomplishment?

Zheng He led China to become the superpower of the Indian Ocean.

the right choice would be a. culture within the city-state. c. loyalty to the police. d separation by land and sea.

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