Question

Rezolvati
(x la puterea 2 +2x+2)(x la puterea2+2x)+1

Answer 1

Explicație pas cu pas:

(x²+2x+2)(x²+2x)+1

Notam x²+2x=y

Avem:

(y+2)y+1=y²+2y+1=(y+1)²

<=> (y+1)²=(x²+2x+1)²