SOLUTION: Solve the equation. Check all proposed solutions and separate your answers with commas. 3 x^{5/7} - 12 = 0

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Solve the equation. Check all proposed solutions and separate your answers with commas. 3 x^{5/7} - 12 = 0      Log On


   

Question 945368: Solve the equation. Check all proposed solutions and separate your answers with commas.
3 x^{5/7} - 12 = 0
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
3x%5E%285%2F7%29+-+12+=+0; the exponent is 5/7
divide equation by 3
x%5E%285%2F7%29+-+4+=+0
x%5E%285%2F7%29+=+4
log%28%28x%5E%285%2F7%29%29%29+=+log%28%284%29%29
the log equiv of exponents
%285%2F7%29%2Alog%28x%29+=+log%28%284%29%29
%285%2F7%29%2Alog%28x%29+=+.602
log(x) = .602 * 7%2F5
log(x) = .843
x = 6.96