Question

fatore a expressão x^2-2xy-z^2+y^2

Answer 1

x² - 2xy - z² + y²
(x - y)² - z²
[(x - y) . (x - y)] - z²
[(x - y) . (x - y)] + [z . (- z)]
[(x-y)+z] . [(x-y)-z]
(x - y + z).(x - y - z)

=)

Answer 2

x^2-2xy-z^2+y^2

x²-2xy+y²-z²

(x-y)² -z²

[(x-y)-z]*[(x-y)+z]

=(x-y-z) * (x-y+z)