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在用换元法解一元二次方程的基础上,进一步讲解用换元法解一元三次方程和一元四次方程的通用公式,拓宽学生的知识面,培养学生学习和研究数学的兴趣。
On the basis of the metamorphic unitary quadratic equation with the metamorphic unit method, this paper further explains the general formula of solving the one and three cubic equation and the quadratic quadratic equation by replacing the unit method, broaden the students ’knowledge and cultivate students’ interest in studying and studying mathematics.