Find x = ? where x^-4 = 1/256

by **Guest** » Fri Sep 16, 2011 8:38 am

Solve the following equation:
[tex]x^{-4}=\frac{1}{256}[/tex]
find x = ?

by **Math Tutor** » Thu Dec 01, 2011 11:28 am

[tex]x^{-4} = \frac{1}{x^4} = \frac{1}{256}[/tex]
[tex]x^4 = 256[/tex]

[tex]256 = 4^4[/tex]
so
[tex]x = 4[/tex]

by **burgess** » Wed Jul 16, 2014 6:31 am

Guest wrote:Solve the following equation:
[tex]x^{-4}=\frac{1}{256}[/tex]
find x = ?

x^-4 = 256^-1 => x^-4 = 4 ^-4 => x=4

by **leesajohnson** » Tue Apr 26, 2016 5:02 am

x−4=1/256
1/x−4=1/256
1/x−4=1/256
x4=256
x4=4^4
So
x=4

by **Guest** » Tue Apr 26, 2016 9:08 am

X = + or- 4 is the answer

+4 x +4 x +4 x +4 = 256

-4 x -4 x -4 x -4 = 256