we use 1,2,3,...,9 whats this problem anser ? 1/(x*x)+x/(x*x)+x/(x*x)=1

If you can only use the whole numbers from 1 through 9 to solve that problem, you won't get an answer.

1/x² + 1/x + 1/x = 1

1/x² + 2/x = 1                         

1 + 2x =  x²                                (multiplying both sides by x²)

0 = x² - 2x - 1

x = 1 ± √2                                   (using quadratic formula)

Nice analysis there, geno........!!!!