The root in mathematics is the value of the unknown that makes the left and right sides of the equation equal. The roots of the equation F(x) refer to all values of x that satisfy F(x)=0. The root and solution of a quadratic equation are different, the root can be multiple, and the solution must be different. If an unary quadratic equation has two different roots, it is said that it has two different solutions. The root and solution of a linear equation are the same. When solving fractional equation, irrational equation and logarithmic equation, it needs to be transformed into integral equation, which sometimes leads to the increase of roots. Root increment is an unknown value that makes the original equation meaningless, and this value is not the solution of the original equation.

Root (a term in mathematical algebra). The so-called root of the equation is the value of the unknown that makes the left and right sides of the equation equal. The root and solution of a quadratic equation are different. The root can be multiple, but the solution must be different. If a quadratic equation has two different roots, it is also called two different solutions. The so-called solution and root of the equation are the unknown values that make the left and right sides of the equation equal.

Square root, also called quadratic square root, refers to the real number whose multiplication result is equal to [√] for non-negative real numbers, in which the square root belonging to non-negative real numbers is called arithmetic square root. Positive numbers have two square roots.

0 has only one square root, which is 0 itself; Negative numbers have no square root. For example, the square root of 9 is 3 Note: Sometimes the square root we say refers to the arithmetic square root.