+0  
 
0
80
1
avatar

how do we calculate x^2=9 

and x² = - 5 

 May 18, 2020
 #1
avatar+924 
0

1)
\(x^2=9\)

\(\sqrt{x^2}=\sqrt{9}\)

\(x=±3\)

2)
\(x^2=-5\)

\(\sqrt{x^2}=\sqrt{-5}\)

\(x=±\sqrt{5}i\)

 May 18, 2020

4 Online Users

avatar
avatar