Question

x2+4x-5=0 completing square method​

Answer 1

Answer:

Given:

$x^2 +4x - 5 =0$

Solution:

By completing square method:

$\implies x^2 + 4x - 5 = 0$

$\implies x^2 + 4x = 5$

$\implies x^2 + 4x + 4 = 5 + 4$

$\implies (x + 2)^2 = 9$

$\implies x+ 2 = \pm 9$

$\boxed{\implies{\boxed{x = 7 \ or \ x= -11}}}$