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      2. GRE考試數學概念及解析

        時間:2022-08-04 04:09:33 GRE考試 我要投稿
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        GRE考試數學概念及解析

          GRE考試數學考點:Adding Monomials

        GRE考試數學概念及解析

          To add two monomials of the same variables just add the coefficients.

          Only two like monomials can be added together.

          Example:

          By adding 3x and 4x, we get (3+4)x=7x.

          By adding 3xy+2xy, we get (3+2)xy=5xy.

          By adding as and bx, we get ax+bx=(a+b)x.

          Remember:

          Monomials can be added only if they have the same variables with identical powers.

          GRE考試數學考點:Algebraic Expression

          One or many terms connected by algebraic operations is called an algebraic expression. The operations between the terms must be valid to yield an expression.

          Example

          (3x+5),(ax2+c),and (xy+a)(x+y) are all algebraic expressions.

          (2x+5)+·(3x) is not an expression since + followed by· is not a valid sequence of operations.

          Remember

          There is no=sign in an expression.

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