200
8b.) The region R is the base of a solid. For each y, where 0≤y≤2, the cross section of the solid taken perpendicular to the y-axis is a rectangle whose base lies in R and whose height is 2y. Write, but do not evaluate, an integral expression that gives the volume of the solid.
₀∫² 2x⁴+4x^3-22x²-24x+72 dx