'Solve for x, whenA^4 =C,

A:

( 1 X )

( 0 1 )

andC:

( 1 51 )

( 0 1 )'

At first I took the 4th root of 51, which gave me 2.67,

but when I plotted that into my calculator, it was wrong,

and didn't give me 51.

According to my calculator x = 12.75, but why is that?

12.75 is 51/4, but isn't that wrong since it'sA^4?

If anyone understood that and can explain it to me, I'd be very grateful (: