Question

Help. x^2+2x-8=0

Answer 1

x=-4,2

Answer 2

a = 1
b = -2
c = -8

x = - b +/- square root (b^2 - 4ac) / 2a

x = 2 +/- square root ( 4 + 32) / 2 =
2 +/- 6 / 2

x1 = -2
x2 = 4

Answer 3

factor as
\[x^2+2x-8=0\]
\[(x+4)(x-2)=0\[
\[x+4=0\]
\[x=-4\]
\[x-2=0\]
\[x=2\]

Answer 4

smurfy has it

Answer 5

thanks