How do you factorise fully x³-x

Determine if the solution set for the system of equations shown is the empty set, contains one point or is infinite. x + y = 5 x + y = 7 {} 1 solution infinite

The slope of the line whose equation is y - 3 = 0 is 0 3 no slope

A11 gram sample of a substance that’s used to treat thyroid disorders has a k-value of 0.1247