Los tres cuartos de un número exceden en 18 unidades a los tres séptimos del mismo número,¿cuál es el número

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103

Answer for 10 points show work you guys in advanced < 3