Question

x² + 2x + x + 2 = 0
( ) -1 , -2
( ) -4 , -1
( ) 5 , 2
( ) 2 , -1
( ) -6 , 4

Answer 1

Resposta:

( x) -1 , -2

Explicação passo-a-passo:

x² + 2x + x + 2 = 0 -b± raiz de delta /2.a

Delta = b²-4.a.c -3±1/2 -3+1/2 = -1

3²-4.1.2 -3-1/2=-4/2

9-8 =-2

Delta =1 x¹= -1 x²= -2