1.(-2x^2)^3+(-4x^3)^2-(-2x)^2×(-1/2x)^4 2.(2×10^2)^3×(-3×10^6)^23.(1/2011×1/2010×1/2009×...×1/3×1/2×1)^2012×(2011×2010×2009×...×3×2×1)^20124.若m是正整数,求(-3)^m×(-1/3)^2m5.已知n为正整数,且(x^2)^n=9,求(-1/3x^3n)^2-3(
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![1.(-2x^2)^3+(-4x^3)^2-(-2x)^2×(-1/2x)^4 2.(2×10^2)^3×(-3×10^6)^23.(1/2011×1/2010×1/2009×...×1/3×1/2×1)^2012×(2011×2010×2009×...×3×2×1)^20124.若m是正整数,求(-3)^m×(-1/3)^2m5.已知n为正整数,且(x^2)^n=9,求(-1/3x^3n)^2-3(](/uploads/image/z/10136058-42-8.jpg?t=1.%EF%BC%88-2x%5E2%29%5E3%2B%28-4x%5E3%29%5E2-%28-2x%29%5E2%C3%97%28-1%2F2x%29%5E4+2.%282%C3%9710%5E2%29%5E3%C3%97%28-3%C3%9710%5E6%29%5E23.%281%2F2011%C3%971%2F2010%C3%971%2F2009%C3%97...%C3%971%2F3%C3%971%2F2%C3%971%29%5E2012%C3%97%282011%C3%972010%C3%972009%C3%97...%C3%973%C3%972%C3%971%29%5E20124.%E8%8B%A5m%E6%98%AF%E6%AD%A3%E6%95%B4%E6%95%B0%2C%E6%B1%82%28-3%29%5Em%C3%97%28-1%2F3%29%5E2m5.%E5%B7%B2%E7%9F%A5n%E4%B8%BA%E6%AD%A3%E6%95%B4%E6%95%B0%2C%E4%B8%94%28x%5E2%29%5En%3D9%2C%E6%B1%82%28-1%2F3x%5E3n%29%5E2-3%28)
1.(-2x^2)^3+(-4x^3)^2-(-2x)^2×(-1/2x)^4 2.(2×10^2)^3×(-3×10^6)^23.(1/2011×1/2010×1/2009×...×1/3×1/2×1)^2012×(2011×2010×2009×...×3×2×1)^20124.若m是正整数,求(-3)^m×(-1/3)^2m5.已知n为正整数,且(x^2)^n=9,求(-1/3x^3n)^2-3(
1.(-2x^2)^3+(-4x^3)^2-(-2x)^2×(-1/2x)^4 2.(2×10^2)^3×(-3×10^6)^2
3.(1/2011×1/2010×1/2009×...×1/3×1/2×1)^2012×(2011×2010×2009×...×3×2×1)^2012
4.若m是正整数,求(-3)^m×(-1/3)^2m
5.已知n为正整数,且(x^2)^n=9,求(-1/3x^3n)^2-3(-x^2)^2n的值
6.已知x=2011,y=1/2011,求x^3×x^3m×(y^3)^m+1的值
1.(-2x^2)^3+(-4x^3)^2-(-2x)^2×(-1/2x)^4 2.(2×10^2)^3×(-3×10^6)^23.(1/2011×1/2010×1/2009×...×1/3×1/2×1)^2012×(2011×2010×2009×...×3×2×1)^20124.若m是正整数,求(-3)^m×(-1/3)^2m5.已知n为正整数,且(x^2)^n=9,求(-1/3x^3n)^2-3(
1、(-2x^2)^3+(-4x^3)^2-(-2x)^2×(-1/2x)^4=-8X^6+16X^6-1/4X^6=31/4X^6
2、(2×10^2)^3×(-3×10^6)^2=72×10^18
3、(1/2011×1/2010×1/2009×...×1/3×1/2×1)^2012×(2011×2010×2009×...×3×2×1)^2012=(1/2011×2011×1/2010×2010×1/2009×2009×……×1/3×3×1/2×2×1×1)^2012=1
4、1)当m是奇数时,(-3)^m×(-1/3)^2m=-(1/3)^m
2)当m是偶数时,(-3)^m×(-1/3)^2m=1/3^m
5、由已知求得x^2n=9,(-1/3x^3n)^2-3(-x^2)^2n=1/9X^6n-3X^4n=X^4n(X^2n/9-3)=-162
6、x^3×x^3m×(y^3)^m+1=2011^(3+3m)×1/2011^3(m+1)=1
3..(1/2011×1/2010×1/2009×...×1/3×1/2×1)^2012×(2011×2010×2009×...×3×2×1)^2012
=.(1/2011×2011×2010×1/2010×1/2009×2009×...×1/3×3×1/2×2×1×1)^2012
=1^2012
=1
4.(-3)^m×(-1/3)^2m
=(-3×-1/...
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3..(1/2011×1/2010×1/2009×...×1/3×1/2×1)^2012×(2011×2010×2009×...×3×2×1)^2012
=.(1/2011×2011×2010×1/2010×1/2009×2009×...×1/3×3×1/2×2×1×1)^2012
=1^2012
=1
4.(-3)^m×(-1/3)^2m
=(-3×-1/3)^m×(-1/3)^m
=1^m×(-1/3)^m
=(-1/3)^m
5.(-1/3x^3n)^2-3(-x^2)^2n=(-1/3x^2n)^3-3(-x^2n)^2=-27-243=-270
6.x^3×x^3m×(y^3)^m+1=x^3×(x×y)^3m+1=2011^3+1
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