Question

descompuneti : x^3-1​

Answer 1

x³ -1  = x³ + (x²-x²)  +(x -x) -1 =

x³ +x²+x  - x²-x -1 =

x(x²+x+1) - 1(x²+x+1) =

(x²+x+1)(x-1)

Answer 2

Răspuns:

x³-1=x³-1³=(x-1)(x²+x×1+1²)=(x-1)(x²+x+1²)=(x-1)(x²+x+1)