Question

Zapisz podany iloczyn w postaci różnicy kwadratów . a) (x - y ) (x+ y ) b) ( 5x-3y) (5x+3y) c) (4,5x+y) (4,5x-y)

Answer 1

a) (x-y) (x+y) = x^2 - y^2

b) (5x-3y) (5x+3y) = 25x^2 - 9y^2

c)  (4,5x+y) (4,5x-y) = 20,25x^2 - y^2

 

^2 - do kwadratu 

 

to chyba tak bd

Answer 2

z...........

........................