indeterminate equation

An indeterminate equation, in mathematics, is an equation for which there is more than one solution; for example, 2x = y is a simple indeterminate equation, as are ax + by = c and x² = 1. Indeterminate equations cannot be solved uniquely. Prominent examples include the following:
Univariate polynomial equation:

which has multiple solutions for the variable x in the complex plane unless it can be rewritten in the form .