代數問題????so easy

2008-06-13 3:41 am

化簡 (3ba2+2ab2)-(3b2a+a2b)

化簡 (3ba2+2ab2)-(3b2a+a2b)

化簡 (3ba2+2ab2)-(3b2a+a2b)
化簡 (3ba2+2ab2)-(3b2a+a2b)

回答 (2)

2008-06-13 4:46 am

✔ 最佳答案

1. (3ba^2 + 2ab^2) - (3ab^2 + ba^2) = ab(3a + 2b) - ab(3b + a) = ab[3a + 2b -3b -a] = ab(2a -b).

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2008-06-22 6:22 am

(3ba^2+2ab^2)-(3b^2a+a^2b)
= ab(3a + 2b) - ab (3b + a)
= ab [(3a + 2b) - (3b + a)]
= ab (3a + 2b - 3b - a)
= ab (2a - b)

參考: myself

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