Which of the following Greek inventions improved irrigation? A. Archimedes' screw

B. Ptolemy's geocentric structure

C. Euclid's geometry

D. Aristarchus's heliocentricity

the greek invention that improved irrigation was the Archimedes' crew

The answer should be A. Archimedes' screw correct me if I'm wrong.

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