Y. Z. has written:
'A seasonable letter on the late treaty with Nizam Allee Kawn, and the Commotions in consequence of it, on the coast of Coromandel'
'A letter from a layman in the country, to, &c. concerning the Act of Parliament, for bringing to justice the murderers of Captain John Porteous'
F. M. has written: 'Cuentos de X, Y y Z'
E. Y. Kraskovskii has written: 'L. I. I. Z. T. V puti'
Clemente Palma has written: 'X Y Z (novela grotesca)'
D. Z. de L. J. has written: 'Cantares nuevos, amorosos y discretos'
The expression y^4 - z^4 can be factored using the difference of squares formula. It can be written as (y^2 + z^2)(y^2 - z^2), which can be further simplified to (y^2 + z^2)(y + z)(y - z).
Carlos Urenda Z. has written: 'La empresa y el derecho' -- subject(s): Business enterprises, Corporation law, Law and legislation
Z. Hejda has written: 'Preklady'
Z. Chulanova has written: 'SShA'
Z. Wohl has written: 'Darkness'
Z. Bobrovskaia has written: 'Ivan Babuchkin'
Z. Kopal has written: 'Numerical analysis'
Z. Chirkova has written: 'Mechta i beton'