[1-﹙a2+8﹚/﹙a2+4a+4﹚]÷[﹙4a-4﹚/﹙a2+2a﹚]

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/08 13:47:12
[1-﹙a2+8﹚/﹙a2+4a+4﹚]÷[﹙4a-4﹚/﹙a2+2a﹚][1-﹙a2+8﹚/﹙a2+4a+4﹚]÷[﹙4a-4﹚/﹙a2+2a﹚][1-﹙a2+8﹚/﹙a2+4a+4﹚]÷[﹙4a-

[1-﹙a2+8﹚/﹙a2+4a+4﹚]÷[﹙4a-4﹚/﹙a2+2a﹚]
[1-﹙a2+8﹚/﹙a2+4a+4﹚]÷[﹙4a-4﹚/﹙a2+2a﹚]

[1-﹙a2+8﹚/﹙a2+4a+4﹚]÷[﹙4a-4﹚/﹙a2+2a﹚]
[1-﹙a²+8﹚/﹙a²+4a+4﹚]÷[﹙4a-4﹚/﹙a²+2a﹚]
=[(a²+4a+4-a²-8﹚/﹙a²+4a+4﹚]×[﹙a²+2a﹚/﹙4a-4﹚]
=[(4a-4﹚/﹙a+2﹚²]×[﹙a²+2a﹚/﹙4a-4﹚]
=﹙a²+2a﹚/﹙a+2﹚²
=a/(a+2)