The problem
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again the last step of this solution says: explanation for this step does not exist. I would love to know the explanation in this step please.
Answer provided by our tutors
Unfortunately factoring an expression like this:
is beyond the capabilities of our solver (it is definitely beyond the scope of any high-school algebra course that we have seen).
When our step by step solver encounters such a hard problem, it uses an 'industrial strength' Computer Algebra System (called Macsyma), to produce the final factorization result. However, the drawback of such a system is that it doesn't produce step by step solutions
Regards
NJ