因式分解计算(1)-196a^2b^2+81x^4y^2 (2)4(x+2y)^2-25(x-2y)^2 (3)4(x+y+z)^2-9(x-y-z)^2
问题描述:
因式分解计算(1)-196a^2b^2+81x^4y^2 (2)4(x+2y)^2-25(x-2y)^2 (3)4(x+y+z)^2-9(x-y-z)^2
答
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因式分解计算(1)-196a^2b^2+81x^4y^2 (2)4(x+2y)^2-25(x-2y)^2 (3)4(x+y+z)^2-9(x-y-z)^2
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