Question

Me ajudem!!
X²+2x+1=4

Answer 1

X²+2x+1=4

(x+1)² = 4

x+1 = √4

x+1 = ±2 ↓

{x+1= +2 ==> x'=1 ✓

{x+1= -2 ==> x"=-3 ✓