SOLUTION: can you help me? solve the equation. 64k^2 - 81 = 0 thanks

Algebra ->  Equations -> SOLUTION: can you help me? solve the equation. 64k^2 - 81 = 0 thanks       Log On


   

Question 6433: can you help me?
solve the equation.
64k^2 - 81 = 0
thanks
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
64k%5E2+-+81+=+0
64k%5E2+=+81
k%5E2+=+81%2F64
k+=+%2B+sqrt%2881%2F64%29 or k+=+-+sqrt%2881%2F64%29
k+=+%28sqrt%2881%29%2Fsqrt%2864%29%29 or k+=+-+%28sqrt%2881%29%2Fsqrt%2864%29%29
k+=+9%2F8 or k+=+-9%2F8

jon.