数学,因式分解(要有正规步骤)
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发布时间:2024-10-19 23:34
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热心网友
时间:2024-11-08 20:22
1) 5b(a-b)-(b-a)^2
= 5b(a-b)-(a-b)^2
=(a-b)(5b-a+b)
=(a-b)(6b-a)
(2) (x+y)^2(x+2y)-(x+y)(x+2y)^2
=(x+y)(x+2y)(x+y-x-2y)
=-y(x+y)(x+2y)
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热心网友
时间:2024-11-08 20:23
(1) 5b(a-b)-(b-a)^2
=5b(a-b)-(a-b)^2
=(a-b)(5b-a+b)
=(a-b)(6b-a)
(2) (x+y)^2(x+2y)-(x+y)(x+2y)^2
=(x+y)(x+2y)(x+y-x-2y)
=-y(x+y)(x+2y)