(5x+2)^2(x-1)/x(x^2-1) is greater than or equal to 0

Hmmm... Tough one; OK, The alternative formula is: (1m x .6/12) + (1f/12) = 1r

Nitoce the difference of two squares in the denominator?

\frac{(5x+2)^{2}(x-1)}{x(x+1)(x-1)}\geq{0}

Now cancel and solve.