Question

Efectuati:

a) (x-y) (x+y) (x²+y²)
b) (1-z) (1+z) (1+z²)
c) ( √5a-7b) (5a+7b) (25a²+49a²)
d) (3x+5y) (9x²+25y²) (3x-5y)

Answer 1

A. x la puterea 4 -y la puterea a4
B. 1 - z la puterea 4
C. (radical din 5a - 7b)
D. 9x la puterea a 2 +5y la puterea a2