Find all zeros. 9) f(x) = x + 5x? - * - 5
10) f(x) = x3 + 2x2 - x - 2
11) f(x) = x3 – 3x2 - 9x - 5
12) f(x) = x - 5x² + 4x - 20
13) f(x) = x4 – 16
14) f(x) = x* + 7x + 11x² + 5x
Please help

The area (a) of a circle with a radius of r is given by the formula and its diameter (d) is given by d=2r. arrange the equations in the correct sequence to rewrite the formula for diameter in terms of the area of the circle.