Can different Hypercomplex Dimensions be operated?

Can we make a product or a sum of quaternions with complexes ? Or maybe is it legal to convert complex to higher dimension.

Like (5 + 2i) * (-4 + 1i + 4j + 3k)


Solution 1:

If you take tessarines (or bicomplex numbers), you definitely can multiply or add complex numbers to them, because they include complex numbers.