Question

sgn(x²-1) = ( x+1)² find yhe no of solution​

Answer 1

${\huge{\overbrace{\underbrace{\blue{Answer}}}}}}$

$= > ( {x}^{2} - 1) = {(x + 1)}^{2} \\ = > {x}^{2} - 1 = {x}^{2} + 1 + 2x \\ = > {x}^{2} - {x}^{2} - 1 - 1 - 2x = 0 \\ = > - 2 - 2x = 0 \\ = > 2x = - 2 \\ = > x = \frac{ - 2}{2} = - 1$

Answer 2

Answer:

Step-by-step explanation:

There is only one solution i.e -1