Need help I’m getting stuck on this problem

Which value is not a solution of 8x^3 – 1 = 0

(mc 02.03) what set of reflections and rotations would carry rectangle abcd onto itself? reflect over the y-axis, reflect over the x-axis, rotate 180° rotate 180°, reflect over the x-axis, reflect over the line y=x reflect over the x-axis, rotate 180°, reflect over the x-axis rotate 180, reflect over the y-axis, reflect over the line y=x

In which form is the following function written? y = - 2(x – 3)(x + 5)