Choose all the sets containing the symbol pi

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x

If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17