Assignment:
A cubic shipping container had a volume of a3 cubic meters. The height was decreased by a whole number of meters and the width was increased by a whole number of meters so that the volume of the container now is a3+2a2-3a cubic meters. By how many meters were the height and width changed.
Note: Appendix A gives the formula for the volume of a cube.
Provide complete and step by step solution for the question and show calculations and use formulas.