Question

(x + 2)² / (x² + 4) = 1

Answer 1

Vamos lá

(x+2)² / (x²+4)=1

(x+2²)/ (x²+4)= 1, x e R

(x+4) ÷ (x²+4)= 1

x+4/ x²+ 4= 1

x+4= x² + 4

x+ 4-x² - 4 = 0

x•( 1 - x ) = 0

x= 0

1-x= 0

x= 0

x= 1

S{0,1}