What's the difference between the set {x | X's square-5x + 6 = 0} and {X's square-5x + 6 = 0}?

What's the difference between the set {x | X's square-5x + 6 = 0} and {X's square-5x + 6 = 0}?

The element of the set is x, and the value range of X is the solution of the square of x-5x + 6 = 0, which contains two elements 2 and 3
The element of the set is the square of X - 5x + 6 = 0 (the element of the set is a quadratic equation of one variable)
The former is the set of solutions of X, while the latter is the set of equations, so it is different
What does the first formula mean by two X's and a vertical line
The set {x | X's square-5x + 6 = 0} can be expressed as {x | x = 2, x = 3} is a set about X
This represents only one equation, solution set: x = 2 or x = 3
If x is an integer, can (x ^ 2-5x) * (x ^ 2-5x-2) - 24 be divided by x ^ 2-1
(x^2-5x)*(x^2-5x-2)-24
=（x^2-5x）^2-2（x^2-5x）-24
=（x^2-5x-6）（x^2-5x+4）
=（x-6）（x+1）（x-1）（x+4）
=（x^2-1）（x-6）（x+4）
If x is an integer, then (x ^ 2-5x) * (x ^ 2-5x-2) - 24 can be divided by x ^ 2-1
The method of transforming binary linear equations into unitary linear equations is elimination method_______ And_____ .
The method of transforming binary linear equations into unitary linear equations is elimination method, that is, addition and subtraction elimination method_ And_ Substitution elimination method____ .
How to calculate 2 / 3x + 3 / 4x = 1 / 8
2/3x+3/4x＝1/8
17/12x=1/8
x=1/8÷17/12
x=3/34
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The basic idea of solving the system of linear equations of two variables is______ .
Fill in the blanks
The basic idea of solving binary linear equations by substitution method is elimination, which is divided into substitution elimination method and addition and subtraction elimination method
#The general step of substitution elimination method is to express one of the unknowns with another, that is, to write one of the equations in the form of "y =" or "x =". If there is already an equation in the title in this form, it can be directly substituted into another equation
#The method of addition and subtraction elimination is to transform one of the equations into the same or opposite number as an unknown number in the second equation, and then add and subtract the two equations to eliminate the elements
The basic idea of substitution method is elimination, which is divided into substitution elimination method and addition and subtraction elimination method
#The general step of substitution elimination method is to express one of the unknowns with another, that is, to write one of the equations in the form of "y =" or "x =". If there is already an equation in the title in this form, it can be directly substituted into another equation
#The addition subtraction elimination method is to transform one of the equations into the same or opposite number as an unknown number in the second equation, and then add and subtract the two equations to eliminate the elements
The basic idea of substitution method is elimination, which is divided into substitution elimination method and addition and subtraction elimination method
#The general step of substitution elimination method is to express one of the unknowns with another, that is, to write one of the equations in the form of "y =" or "x =". If there is already an equation in the title in this form, it can be directly substituted into another equation
#The addition subtraction elimination method is to transform one of the equations to make it the same as or opposite to an unknown number in the second equation, and then add and subtract the two equations to eliminate the elements
The quadratic equation of two variables is transformed into the linear equation of one variable.
The basic idea of solving binary linear equations by substitution method is elimination, which is divided into substitution elimination method and addition and subtraction elimination method
#The general step of substitution elimination method is to express one of the unknowns with another, that is, to write one of the equations in the form of "y =" or "x =". If there is already an equation in the title in this form, it can be directly substituted into another equation
#The addition subtraction elimination method is to transform one of the equations into the same or opposite number as an unknown number in the second equation, and then add and subtract the two equations to eliminate the elements
The basic idea of solving binary linear equations by substitution method is elimination, which is divided into substitution elimination method and addition and subtraction elimination method
#The general step of substitution elimination method is to express one of the unknowns with another, that is, to write one of the equations in the form of "y =" or "x =". If there is already an equation in the title in this form, it can be directly substituted into another equation
#The addition subtraction elimination method is to transform one of the equations to make it the same as or opposite to an unknown number in the second equation, and then add and subtract the two equations to eliminate the elements
The elimination of the yuan.
Elimination is divided into substitution elimination method and addition and subtraction elimination method.
Transfer the term to form y = ax + B (a, B are constants), and take this as Formula 1.
Then we substitute Formula 1 into formula 2, which will play the role of elimination. We get an equation of one variable. After solving x, we substitute Formula 1 for y.
Done.
3x+5=4x+1．
The results show that: - x = - 4, x = 4
The equation 2kx-4y + k = 3, if the equation is a bivariate linear equation, then K? If the equation is a univariate linear equation, then the solution of the equation is?
The equation 2kx-4y + k = 3, if the equation is quadratic, then K ≠ 0
If the equation is a linear equation of one variable, then k = 0 and the equation is - 4Y = 3
So y = - 3 / 4
How to calculate this equation? 4 (x-1)
Solving 4x-4 respectively
4（x-1）
It is known that the equation (K + 2) x + (K-6) y = K + 8. When k is a value, the equation is a linear equation with one variable. When k is a value, the equation is a linear equation with two variables
1. Once a dollar, either X or Y
So K + 2 = 0 or K-6 = 0
We get k = - 2 or K = 6
2. One yuan twice. X, y have
So K + 2 and K-6 are not equal to 0
So K is not equal to - 2 and not equal to 6
When k = - 2 or 6, one variable once is not equal to two variables once
When K + 2 = 0 or K-6 = 0, i.e. k = - 2 or 6, the equation is one variable linear equation
When k is not - 2 and not = 6, it is a quadratic equation of two variables
The essential formula of 4x-8x + 5-3x + 6x-4
The original formula = (4x & # 178; - 3x & # 178;) + (6x-8x) + (5-4)
=x²-2x+1)