①³√8/27-³√0.027+(-³√1/2)³ ②√2又41/64+√0.81×36+1/2√0.25③(-2x)²+(6x³-12x^4)÷(3x²) ④a^12÷(a^8÷a²)×a³
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![①³√8/27-³√0.027+(-³√1/2)³ ②√2又41/64+√0.81×36+1/2√0.25③(-2x)²+(6x³-12x^4)÷(3x²) ④a^12÷(a^8÷a²)×a³](/uploads/image/z/2484312-24-2.jpg?t=%E2%91%A0%26%23179%3B%E2%88%9A8%2F27-%26%23179%3B%E2%88%9A0.027%2B%EF%BC%88-%26%23179%3B%E2%88%9A1%2F2%EF%BC%89%26%23179%3B+%E2%91%A1%E2%88%9A2%E5%8F%8841%2F64%2B%E2%88%9A0.81%C3%9736%2B1%2F2%E2%88%9A0.25%E2%91%A2%EF%BC%88-2x%EF%BC%89%26%23178%3B%2B%EF%BC%886x%26%23179%3B-12x%5E4%EF%BC%89%C3%B7%EF%BC%883x%26%23178%3B%EF%BC%89+%E2%91%A3a%5E12%C3%B7%EF%BC%88a%5E8%C3%B7a%26%23178%3B%EF%BC%89%C3%97a%26%23179%3B)
①³√8/27-³√0.027+(-³√1/2)³ ②√2又41/64+√0.81×36+1/2√0.25③(-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+√0.81×36+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+√0.81×36+1/2√0.25③(-2x)²+(6x³-12x^4)÷(3x²) ④a^12÷(a^8÷a²)×a³
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