A graphing calculator is recommended. Use Newton's method to find all solutions of the equation correct to eight decimal places. Start by looking at a graph to find initial approximations. (Enter your answers as a comma-separated list.)

2x⁷ 4x⁴ + 8x³ + 7 = 0

A graphing calculator is recommended. Use Newton's method to find all the solutions of the equation correct to eight decimal places. Start by looking at a graph to find initial approximations. (Enter your answers as a comma-separated list.)

cos(x² x) = x⁸

Use Newton's method to find the coordinates, correct to six decimal places, of the point on the parabola

y = (x 9)² that is closest to the origin.