What numbers can multiply to 66, but add to -72?

Using inductive reasoning, what are the next two number in this set? 2,3/2,4/3,5/4,

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a.p.

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14