Find one value of xxx that is a solution to the equation (x 2 −7) 2 +2x 2 −14=0

List the elements of the set in roster notation. (enter empty or ∅ for the empty set.) {x | x is a letter in the word hippopotamus}

Use the x-intercept method to find all real solutions of the equation. x^3-10x^2+27x-18=0

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?