Question

Equação segundo Grau

x²+2x-8=0

Answer 1

Delta=(2)²-4(1)(-8)
Delta=4+32
Delta=36

x=-2±6
_____
2

x¹=2
x²=-4

Answer 2

$x^{2} +2x-8=0 \Delta= b^{2} -4.a.c \Delta= 2^{2} -4.1.(-8) \Delta=4+32=36$
$x1=-+(-8) \sqrt{36}/2=8-6/2=2/2=1$
$x^{2} =-+(-8) \sqrt{36} /2=8+6/2=14/2=7$


S{1,7}