【原】Bilingual Mathematics Teaching（9）Integral Expressions

Words and Expressions

127	代数式	algebraic expression
128	单项式	monomial
129	系数	coefficient
130	次数	degree
131	多项式	polynomial
132	二项式	binomial
133	三项式	trinomial
134	二次三项式	second degree trinomial
135	项	term
136	常数项	constant term
137	整式	integral expression
138	升幂	in ascending order of the power
139	降幂	in descending order of the power

Examples

1、The coefficient of -2a² is -2, while the degree of -2a² is 2.

-2a²的系数是-2，次数是2.

2、The highest degree of 2x²-x-1 is two. This polynomial can also be called a second degree trinomial.

多项式2x²-x-1的最高次数是2，这个多项式也叫做二次三项式。

3、An expression with numbers or letters standing for numbers, which are connected by operation signs and brackets is called an algebraic expression.

用运算符号和 括号把数或表示数的字母连接而成的式子叫做代数式。

4、Replace the letter in an algebraic expression with values and then calculate. The final result of the operation is called the value of the algebraic expression.

用数值代替代数式里的字母，按照代数式中的运算关系得出的结果叫做代数式的值。

5、The degree of a monomial is the sum of the variables exponents.

一个单项式的次数是这个单项式中所有字母的指数和。