maths

👨🏻‍🏫 學術台數學

Liu

2007-10-21 5:47 am

factorize
2(a-b)^2-ab+a^2

回答 (4)

Jazzzzzzzz

2007-10-21 5:54 am

✔ 最佳答案

2(a-b)^2-ab+a^2
=2(a-b)^2-a(b-a)
=2(a-b)^2+a(a-b)
=(a-b)(2a-2b+a)
=(a-b)(3a-2b)

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philip

2007-10-21 6:12 am

2(a-b)^2-ab+a^2
= 2(a^2-2ab+b^2) - ab + a^2
= 2a^2 - 4ab + 2b^2 - ab + a^2
=3a^2 - 5ab + 2b^2

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用戶150222

2007-10-21 5:55 am

=2(a-b)^2-a(b-a)
=(a-b)[2(a-b)-a]
=(a-b)(2a-2b-a)
=(a-b)(a-2b)//

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Chris

2007-10-21 5:52 am

3a^2+2b^2-5ab

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