简便计算(3m^2n^2)^2X(-2m^2)^4X(-n^2)^5 2008^2-2007X2009 (a+b)(a^2+b^2)(a-b)简便计算(3m^2n^2)^2X(-2m^2)^4X(-n^2)^5 2008^2-2007X2009 (a+b)(a^2+b^2)(a-b)(3x^2y-xy^2+1/2xy)除以(-1/2xy)
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![简便计算(3m^2n^2)^2X(-2m^2)^4X(-n^2)^5 2008^2-2007X2009 (a+b)(a^2+b^2)(a-b)简便计算(3m^2n^2)^2X(-2m^2)^4X(-n^2)^5 2008^2-2007X2009 (a+b)(a^2+b^2)(a-b)(3x^2y-xy^2+1/2xy)除以(-1/2xy)](/uploads/image/z/1268854-70-4.jpg?t=%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%283m%5E2n%5E2%29%5E2X%28-2m%5E2%29%5E4X%28-n%5E2%29%5E5+2008%5E2-2007X2009+%28a%2Bb%29%28a%5E2%2Bb%5E2%29%28a-b%29%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%283m%5E2n%5E2%29%5E2X%28-2m%5E2%29%5E4X%28-n%5E2%29%5E5+2008%5E2-2007X2009+%28a%2Bb%29%28a%5E2%2Bb%5E2%29%28a-b%29%283x%5E2y-xy%5E2%2B1%2F2xy%29%E9%99%A4%E4%BB%A5%EF%BC%88-1%2F2xy%29)
简便计算(3m^2n^2)^2X(-2m^2)^4X(-n^2)^5 2008^2-2007X2009 (a+b)(a^2+b^2)(a-b)简便计算(3m^2n^2)^2X(-2m^2)^4X(-n^2)^5 2008^2-2007X2009 (a+b)(a^2+b^2)(a-b)(3x^2y-xy^2+1/2xy)除以(-1/2xy)
简便计算(3m^2n^2)^2X(-2m^2)^4X(-n^2)^5 2008^2-2007X2009 (a+b)(a^2+b^2)(a-b)
简便计算(3m^2n^2)^2X(-2m^2)^4X(-n^2)^5
2008^2-2007X2009
(a+b)(a^2+b^2)(a-b)
(3x^2y-xy^2+1/2xy)除以(-1/2xy)
简便计算(3m^2n^2)^2X(-2m^2)^4X(-n^2)^5 2008^2-2007X2009 (a+b)(a^2+b^2)(a-b)简便计算(3m^2n^2)^2X(-2m^2)^4X(-n^2)^5 2008^2-2007X2009 (a+b)(a^2+b^2)(a-b)(3x^2y-xy^2+1/2xy)除以(-1/2xy)
(3m^2n^2)^2X(-2m^2)^4X(-n^2)^5
=[(3m^2n^2)(4m^4)(n^4)}^2X(-n)
=-n(12m^6n^6)*2
=-144m^12n^13
2008^2-2007X2009
=2008^2-(2008-1)(2008+1)
=2008^2-2008^2+1
=1
(a+b)(a^2+b^2)(a-b)
=(a^2-b^2)(a^2+b^2)
=a^4-b^4
(3x^2y-xy^2+1/2xy)除以(-1/2xy)
=[3xy(x-y)+1/2xy]*(-2xy)
=-6x^2y^2(x-y)-1