Question

(x+1)² + (x+1)² = [(x+1)²]²​

Answer 1

CAMBIO DE VARIABLE:

(x+1)= a

remplazando :

a²+a²= a⁴

(2a²= a⁴)/a²

2= a²

✓2 = a

✓2= x+1

-1 + ✓2 = x

respuesta x vale -1+✓2