Perform the indicated operation (-2++4i)

2x minus y equals 6, x plus y equals negative 3

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

Me because i don't understand how to do it.: )