SO EASY!3ab^2 -9a^2b^2 +6a^3b^2*注意:题目读法是3ab平方-9a的平方b的平方+6a的三次方b的平方.
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SO EASY!3ab^2 -9a^2b^2 +6a^3b^2*注意:题目读法是3ab平方-9a的平方b的平方+6a的三次方b的平方.
SO EASY!
3ab^2 -9a^2b^2 +6a^3b^2
*注意:题目读法是3ab平方-9a的平方b的平方+6a的三次方b的平方.
SO EASY!3ab^2 -9a^2b^2 +6a^3b^2*注意:题目读法是3ab平方-9a的平方b的平方+6a的三次方b的平方.
=3ab^2(3-9a+6a^2)
=3ab^2(2a-1)(a-1)
3ab^2 -9a^2b^2 +6a^3b^2
=(3ab^2-2a)(1-3a^2b^2)
=a(3b^2-2)(1-3a^2b^2)
SO EASY!3ab^2 -9a^2b^2 +6a^3b^2*注意:题目读法是3ab平方-9a的平方b的平方+6a的三次方b的平方.
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[(a^2-b^2)/b]^2/(a^2+ab)^3*(ab/b-a)^2另:a^2+ab=9