The problem
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This can't be factored?.
Answer provided by our tutors
Right, that expression is not factorable:
https://doyourmath.com/redirect/174/3f55d74973c0ac77c742ad7033610d42?q=c%3Dsolve%26v1%3Dx%25255E4-15x%25255E2y%25255E2-16y%25255E2%26v2%3Dsimplify%3C%2Fa%3E%3C%2Fp%3E
but this, very similar expression, can be factored:
https://doyourmath.com/redirect/174/3f55d74973c0ac77c742ad7033610d42?q=c%3Dsolve%26v1%3Dx%25255E4-15x%25255E2y-16y%25255E2%26v2%3Dsimplify%3C%2Fa%3E%3C%2Fp%3E
It would not be possible to factor with a "y^2" in both the second and third term.
