Devin used what he learned in clas to determine that for every 8 grams of oxygen in water, there is 1 gram of hydrogen

people went from manufacturing one object at a time by hand to manufacturing many objects in factories

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb