Jhenelynviz
Answered

how to solve x²+2x-4=0
quadratic formula

Sagot :

AnneCviz
QUADRATIC FORMULA : [tex]x = \frac{-b ± \sqrt{b^{2} -4ac}}{2a}[/tex]

a = 1
b = 2
c = -4

[tex]x = \frac{-2 ± \sqrt{2^{2} -4(1)(-4)}}{2(1)}[/tex]

[tex]x = \frac{-2 ± \sqrt{20}}{2}[/tex]

[tex]x = \frac{-2 ± 2\sqrt{5}}{2}[/tex]

[tex]\boxed{x = -1 ± \sqrt{5}}[/tex]