2x/x²-64y² - 1/x-8y
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/10 09:08:23
2x/x²-64y² - 1/x-8y
2x/x²-64y² - 1/x-8y
2x/x²-64y² - 1/x-8y
2x/(x²-64y²) - 1/(x-8y)
=2x/(x+8y)(x-8y) - (x+8y)/(x+8y)(x-8y)
=(2x-x-8y)/(x+8y)(x-8y)
=(x-8y)/(x+8y)(x-8y)
=1/(x+8y)
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来源:学生作业帮助网 编辑:作业帮 时间:2024/05/10 09:08:23
2x/x²-64y² - 1/x-8y
2x/x²-64y² - 1/x-8y
2x/x²-64y² - 1/x-8y
2x/(x²-64y²) - 1/(x-8y)
=2x/(x+8y)(x-8y) - (x+8y)/(x+8y)(x-8y)
=(2x-x-8y)/(x+8y)(x-8y)
=(x-8y)/(x+8y)(x-8y)
=1/(x+8y)