The standard form of an unary quadratic equation is: ax? +bx+c=0(a≠0)

An integral equation that contains only one unknown (unary) and the highest order of the unknown is 2 (quadratic) is called unary quadratic equation. The quadratic equation of one variable can be transformed into the general form ax? +bx+c=0(a≠0), where ax It is called quadratic term and a is the coefficient of quadratic term; Bx is called a linear term, and b is the coefficient of the linear term; C is called a constant term.

Solving Equation Basis with Extended Data

1, move terms and symbols: move some terms in the equation from one side of the equation to the other side of the previous symbol, and add, subtract, multiply and divide, change, multiply and divide;

2, the basic properties of the equation:

Adding (or subtracting) the same number or the same algebraic expression on both sides of the (1) equation at the same time, the result is still an equation. Represented by letters: if a=b, c is a number or an algebraic expression.

(2) Both sides of the equation are multiplied or divided by the same number that is not 0 at the same time, and the result is still an equation. Represented by letters: if a=b, c is a number or an algebraic expression (not 0).