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这道题是要求因式分解的吧。如果是的话解答如下:
你给的式子是:(x+2y)^2*(x-2y)^2-(2x+y)^2*(2x-y)^2
解:原式=[(x+2y)*(x-2y)]^2-[(2x+y)(2x-y)]^2
=(x^2-4y^2)^2-(4x^2-y^2)^2
=[(x^2-4y^2)+(4x^2-y^2)]*[(x^2-4y^2)-(4x^2-y^2)]
=(5x^2-5y^2)*(-3x^2-3y^2)
=-15(x^2-y^2)*(x^2+y^2)
=-15(x+y)*(x-y)*(x^2+y^2)
=-15(x+y)(x-y)(x^2+y^2)
你给的式子是:(x+2y)^2*(x-2y)^2-(2x+y)^2*(2x-y)^2
解:原式=[(x+2y)*(x-2y)]^2-[(2x+y)(2x-y)]^2
=(x^2-4y^2)^2-(4x^2-y^2)^2
=[(x^2-4y^2)+(4x^2-y^2)]*[(x^2-4y^2)-(4x^2-y^2)]
=(5x^2-5y^2)*(-3x^2-3y^2)
=-15(x^2-y^2)*(x^2+y^2)
=-15(x+y)*(x-y)*(x^2+y^2)
=-15(x+y)(x-y)(x^2+y^2)
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