求几个因式分解答案~~~a^2(a-b)^2-b^2(a+b)^2(x+y)^2-8(x+y)+169x^2+12xy+4y^23.14X21X21+6.28X10-3.14X409.9^2+9.9X0.2+0.01最后2个是利用分解因式计算前面3个就是分解因式绝对给分~~~

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