Finding the root means that an equation can be found, but it can only be abandoned if it does not meet the conditions. Common in fractional equations. 3. Radical addition: the root obtained by solving the equation that does not meet the set conditions of the problem. Equations with multiple solutions, such as univariate quadratic equations and fractional equations, may have increased roots under certain conditions.
Fractional equation is a kind of equation, which means that the denominator contains unknowns, or there is at least one rational equation with unknowns on the left and right sides of the equal sign, which belongs to elementary mathematics knowledge. Mathematical terminology: A rational equation with at least one denominator unknown on both sides of an equal sign is called a fractional equation.