Completely factor the equations into two or more factors. 100x3 -121x = 0
First, factor out an x: x(100x² - 121) = 0
Now, use he idea of the difference of two squares: x(10x-11)(10x+11) = 0
To solve this equation, set each factor to zero: x = 0 10x - 11 = 0 10x + 11 = 0
Now, solve each of the three little equations.