论文部分内容阅读
二次根式一节是学生学了平方根和算术平方根的基础上提出来的。它是研究算术根的性质和根式变形、根式运算的基础。恒等式(a~(1/2))~2=a(a≥0),a~(2~(1/2))=|a|是极其重要的基础知识。
The secondary roots section is based on the students’ square roots and square roots of arithmetic. It is the basis for the study of the nature of the arithmetic roots and the radical deformation and rooting operations. Identities (a~(1/2))~2=a(a≥0), a~(2~(1/2))=|a| are extremely important basic knowledge.