Math plzz

find the roots of the quadratic equation x^2 – 8x = 9 by completing the square. show your work

What is the solution set of the quadratic inequality x^2-5< or equal to 0

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis.y = 7ex, y = 7e^-x, x = 1; about the y-axis

What’s the volume of the triangular prism?