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(1)(根号12-3倍根号75)×根号3(2)3倍根号8(根号54-5倍根号2-2倍根号6)

来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/11/10 03:02:56
(1)(根号12-3倍根号75)×根号3(2)3倍根号8(根号54-5倍根号2-2倍根号6)
(3)(5+根号6)(5倍根号2-2倍根号3)
(1)(根号12-3倍根号75)×根号3(2)3倍根号8(根号54-5倍根号2-2倍根号6)
(1)(根号12-3倍根号75)×根号3
=6-3×15
=-39;
(2)3倍根号8(根号54-5倍根号2-2倍根号6)
=6√2×(3√6-5√2-2√6)
=12√3-60;
(3)(5+根号6)(5倍根号2-2倍根号3)
=25√2-10√3+10√3-6√2
=19√2;
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