(4x2 + 2x)(x - 6)=_____

admin2013-02-19  5

问题 (4x2 + 2x)(x - 6)=_____

选项

答案4x3 - 22x2 - 12x

解析 Use the Distributive Property to multiply each term of one polynomial by each term of the other(remember to use the FOIL method).
(4x2 + 2x)(x - 6)
First terms:(4x2)(x)= 4X3
Outside terms:(4x2)(-6)= -24x2
Inside terms:(2x)(x)= 2x2
Last terms:(2x)(-6)= -12x
Now place the terms in decreasing order of the exponents:
4x3 - 22x2 - 12x
转载请注明原文地址:https://www.kaotiyun.com/show/3VkO777K
本试题收录于: GRE QUANTITATIVE题库GRE分类
0

最新回复(0)