36(a+b)(a-b)(x+y)-21(a+b)(a-2b)(x+y)提取公因式

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36(a+b)(a-b)(x+y)-21(a+b)(a-2b)(x+y)提取公因式
36(a+b)(a-b)(x+y)-21(a+b)(a-2b)(x+y)提取公因式

36(a+b)(a-b)(x+y)-21(a+b)(a-2b)(x+y)提取公因式
36(a+b)(a-b)(x+y)-21(a+b)(a-2b)(x+y)
=3(a+b)(x+y)[12(a-b)-7(a-2b)]
=3(a+b)(x+y)[5a+2b]
公因式为3(a+b)(x+y)

36(a+b)(a-b)(x+y)-21(a+b)(a-2b)(x+y)=3（a+b)(x+y)[12(a-b)-7(a-2b)=3(a+b)(x+y)(5a+2b)

36(a+b)(a-b)(x+y)-21(a+b)(a-2b)(x+y)
=3(a+b)(x+y)[12(a-b)-7(a-2b)]
=3(a+b)(x+y)(12a-12b-7a+14b)
=3(a+b)(x+y)(5a+2b)

3(a+b)(x+y)[12（a-b)-7(a-2b)]
=3(a+b)(x+y)(5a+2b)

36(a+b)(a-b)(x+y)-21(a+b)(a-2b)(x+y)提取公因式 (a-b)(x-y)-(b-a)(x+y)怎么算 (a+b)(x+y)-(a+b)(x-y)分解因式 (a-b)(x-y)-(b-a)(x+y)因式分解 (a+b)(x+y)-(b+a)(y-x)因式分解快 [a-b][x-y]-[b-a][x+y]的解法化简(x-y)(a+b)-(x-y)(a-b) (a-b)(x-y)+(b-a)(y-x) 分解因式：(a-b)(x-y)-(b-a)(x+y) (a-b)(x-y)-(b-a)(x y)如何解题 (a-b)(x-y)-(b-a)(x+y) (x+y)-(a-b)(x+y)因式分解因式分解 a(y-x)-b(x-y) 因式分解,（a-b)(x-y)-(b-a)(x-y)（a-b)(x-y)-(b-a)(x+y） (x+y)(a-2b) y=(x/a)^b+(b/x)^a+(b/a)^x（a>0,b>0). 求导 (5)a(x+y)-b(x+y)-x-y因式分解通分:-x/a(x-y) ,y/b(y-x)