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①³√8/27-³√0.027+(-³√1/2)³ ②√2又41/64+√0.8

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:2024/11/12 14:14:25
①³√8/27-³√0.027+(-³√1/2)³ ②√2又41/64+√0.81×36+1/2√0.25
③(-2x)²+(6x³-12x^4)÷(3x²) ④a^12÷(a^8÷a²)×a³
①³√8/27-³√0.027+(-³√1/2)³ ②√2又41/64+√0.8
①³√8/27-³√0.027+(-³√1/2)³
=2/3-0.3-1/2
=2/3-3/10-1/2
=-2/15
②√2又41/64+√0.81×36+1/2√0.25
=13/8+0.9×6+1/1
=13/8+5又2/5+1
=8又1/40
③(-2x)²+(6x³-12x^4)÷(3x²)
=4x^2+2x-4x^2
=2x
④a^12÷(a^8÷a²)×a³
=a^12÷a^6×a³
=a^9