By________ A system of equations consisting of two unknowns is called a system of linear equations of two variables

By________ A system of equations consisting of two unknowns is called a system of linear equations of two variables

By_ The times of the terms of the unknowns are all 1_ A system of equations consisting of two unknowns is called a system of linear equations of two variables

It consists of two parts___ The equation consists of, and contains___ A system of equations with two unknowns is called a system of linear equations with two variables

A system of equations consisting of two bivariate linear equations and containing two unknowns is called a system of bivariate linear equations

Combine two quadratic equations of two variables together______ The unknowns form a system of linear equations of two variables
Make the values on both sides of the quadratic equation of two variables_____ Of_______ The value of the unknown is called the solution of the quadratic equation of two variables
The convergence of two equations of binary linear equations_____ It's called the solution of a quadratic equation of two variables

Combine two quadratic equations of two variables together___ Two___ The unknowns form a system of linear equations of two variables
Make the values on both sides of the quadratic equation of two variables__ Equal___ Of___ A couple____ The value of the unknown is called the solution of the quadratic equation of two variables
The convergence of two equations of binary linear equations_ Public solution____ It's called the solution of a quadratic equation of two variables