因式分解a2-3ab+2b2

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因式分解a2-3ab+2b2因式分解a2-3ab+2b2因式分解a2-3ab+2b2a2-3ab+2b2=a2-2ab+b2-ab+b2=(a-b)2-(ab-b2)=(a-b)2-b(a-b)=(a

因式分解a2-3ab+2b2
因式分解a2-3ab+2b2

因式分解a2-3ab+2b2
a2-3ab+2b2
=a2-2ab+b2-ab+b2
=(a-b)2-(ab-b2)
=(a-b)2-b(a-b)
=(a-b)(a-b-b)
=(a-b)(a-2b)

答案是:
(a-2b)(a-b)