Question

-x²-3x+2= 0  qual a resposta ? 

Answer 1

-x²-3x+2=0
b² -4.a.c   -      -b+-√Δ/2.a

a=-1
b=-3
c=2

Δ= -3² -4.-1.2
Δ= 9 + 8
Δ= 17 ( raiz de 17, nao tem exata, entao coloca o decimal ou √17 mesmo

3+√17/2.-1 = 0,93844718719117

3-√17/2.-1 =  5,06155281280883

Answer 2

-X²-3X+2=0
A=-1 B= -3 C=2
Delta = 9-4 (-1)(2)
Delta = 9-8
Delta = 1
X= +3+/-1  
         -2
X¹ = 4  = -2      X² = +2 = -1 
      -2                     -2