Question

x² + x-2=0 equação do segundo grau

Answer 1

Resolva por baskara

B²-4ac
1²-4.1.(-2)
1+8
9
Delta eh igual a 9

X=-b ±raiz quadrada de 9/2a
X= -1±3/2.1
X1=-1+3/2
X1=2/2=1
X2=-1-3/2
X2=-4/2
X2=-2


Raizes = 1,-2