Respuesta :

unicorn3125

Answer:

              b = - 1.6  or   b = 1.6

Step-by-step explanation:

[tex]b^2=2.56\quad\iff\quad b=\pm\sqrt{2.56}\\\\\pm\sqrt{2.56}=\pm\sqrt{256:100}=\pm(\sqrt{256}:\sqrt{100}\,)=\pm(16:10)=\pm1,6[/tex]

Answer:all of the above

Step-by-step explanation:on khan