Many teaching contents of higher algebra course are closely related to middle school mathematics. For example, numbers and fields, middle school textbooks have integers, rational numbers, real numbers and complex numbers. The concept of number field is introduced in higher algebra, and there are four operation rules of addition, subtraction, multiplication and division of polynomials in middle school mathematics textbooks. In higher algebra, the number of polynomials, addition, subtraction and multiplication operations are strictly defined, and the dividing theory of polynomials and the theory of maximum common factor are introduced. Equations, in middle school textbooks, include the one-way equation, the solution method of one-way quadratic equation, the relationship between the root of one-way quadratic equation and its coefficients.<br>
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