Sagot :
Step-by-step explanation:
[tex]0 = x {2} - 4 [/tex]
[tex] - x{2} = - 4[/tex]
[tex]x{2} = 4[/tex]
[tex]x = +2 [/tex]
[tex]x = - 2[/tex]
[tex]x = 2[/tex]
[tex]x1 = - 2 \times 2 = 2[/tex]
Step-by-step explanation:
[tex]0 = x {2} - 4 [/tex]
[tex] - x{2} = - 4[/tex]
[tex]x{2} = 4[/tex]
[tex]x = +2 [/tex]
[tex]x = - 2[/tex]
[tex]x = 2[/tex]
[tex]x1 = - 2 \times 2 = 2[/tex]