中二數題=====5ab-3c-3ac+5b

用戶100447

2007-04-16 7:34 am

因式分解===5ab-3c-3ac+5b

回答 (3)

123

2007-04-16 7:38 am

✔ 最佳答案

5ab-3c-3ac+5b
=5b(a+1) - 3c(a+1)
=(5b - 3c) (a + 1)

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pinky

2007-04-16 7:53 am

5ab-3c-3ac+5b
=5ab+5b-3c-3ac
=5b(a+1)-3c(1+a)
=(5b-3c)(a+1)//

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用戶5200

2007-04-16 7:43 am

=5b(a+1)-3c(a+1)
=(5b-3c)(a+1)

參考: me

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