Please clarify what your question is.
Black holes do not create supernovae. Black holes are created from a supernovae.
"explode as supernovae". These are called Type II supernovae and sometimes a neutron star is formed, not a black hole.
Red Giants and black holes
Supernovae are exploding massive stars which, after exploding, collapse in on themselves to infinite density (providing the remaining core is more than about 3 times the mass of the Sun) forming a singularity called a black hole.
Black holes can be found anywhere in space.There are 2 types of black holes.Stellar and super massive black holes.Super massive black holes can be found in the middle of every galaxy including our own milky way.Stellar black holes can be found anywhere in space.
The most massive stars become black holes.
Objects like solar flares, supernovae, black holes and other galaxies.
There are two explanations. First, when a massive star forms a black hole, usually only a small portion of the star's mass actually goes into the black hole. Most of the rest is blasted away in a supernova, enriching the surrounding space with heavier elements. Second, there are also pair-instability supernovae. Such supernovae occur in extremely massive stars with a very low content of heavier elements, which likely existed in the early universe. Pair-instability supernovae will blow away the entire star, leaving behind no black hole or neutron star remnant.
Most black holes are believed to form when very massive stars die.
It's generally believed that galaxies first formed around "ordinary" black holes and over time, they grew into super massive black holes as stars were slowly "consumed" by the black hole.
The most massive stars will die as black holes.
It is called Black Holes and Revelations