计算:(√6+√5)²-(√6-√5)²
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/15 11:55:26
计算:(√6+√5)²-(√6-√5)²
计算:(√6+√5)²-(√6-√5)²
计算:(√6+√5)²-(√6-√5)²
原式=[(√6+√5)+(√6-√5)][(√6+√5)-(√6-√5)]
=(2√6)(2√5)
=4√30
(√6+√5)²-(√6-√5)²
=(√6+√5+√6-√5)(√6+√5-√6+√5)
=2√6 *2√5
=4√30
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来源:学生作业帮助网 编辑:作业帮 时间:2024/05/15 11:55:26
计算:(√6+√5)²-(√6-√5)²
计算:(√6+√5)²-(√6-√5)²
计算:(√6+√5)²-(√6-√5)²
原式=[(√6+√5)+(√6-√5)][(√6+√5)-(√6-√5)]
=(2√6)(2√5)
=4√30
(√6+√5)²-(√6-√5)²
=(√6+√5+√6-√5)(√6+√5-√6+√5)
=2√6 *2√5
=4√30