Question

x ao quadrdo + 2x-8=0 me ajudeem?

Answer 1

X² + 2X - 8 = 0
X=-2+6/2
x1=4/2   =2
x2= -8/2  =-4

Answer 2

.
Ola Geovana

x² + 2x - 8 = 0

a = 1
b = 2
c = -8

delta
d² = b² - 4ac
d² = 2² -4*1*(-8) 
d² = 4 + 32 = 36
d = 6

x1 = (-b + d)/2a 
x1 = (-2 + 6)/2 = 4/2 = 2

x2 = (-b - d)/2a 
x2 = (-2 - 6)/2 = -8/2 = -4 

..