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前面,我们已经学了许多讲,在那些讲中, 我们学习了 1.数:有理数,无理数,实数; 2.式:整式,分式,二次根式; 3.一次方程:一元一次方程,二元一次方程组,三元一次方程组; 4.一元一次不等式,一元一次不等式组; 5.一元二次方程; 6.列方程或不等式解应用题.以上这些内容都是初中数学最基础和最重要的部分,它们都属于代数.代数,研究现实世界中的数量关系.
In the past, we have learned many lessons. In those lectures, we learned 1. Number: rational number, irrational number, real number; 2. Type: integral type, fractional type, secondary root type; 3. One-time equation: One-ary-one-time equation, binary one-time equation group, ternary one-time equation group; 4. One inequality inequality and one inequality inequality group; 5. One-dimensional quadratic equation; 6. Column equation or inequality solution problem. These are the most basic and important parts of junior high school mathematics. They all belong to algebra. Algebra, studying the quantitative relationship in the real world.