Simplify each expression. 9x+6-4x-2x+1-159 x + 6 − 4 x − 2 x + 1 − 15
(6x^2-2x+5\right)+\left(2x^{2\:}-7x -11\right)

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the given curves about y = 8.8y = x3, y = 0, x = 4use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the given curves about y = 8.8y = x3, y = 0, x = 4