Answer:
Native copper is an uncombined form of copper that occurs as a<u><em> natural mineral</em></u>. Copper is one of the few metallic elements to occur in native form, although it most commonly occurs in oxidized states and mixed with other elements.
Step-by-step explanation:
I THINK a=3 b=9
the answer to your equation is 25, because 17 if 68 is 25
x^3 - 3x^2 - 18x
Using the FOIL method, I arrived at my solution!
