a²(x-y)-4b²(x-y)
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a²(x-y)-4b²(x-y)a²(x-y)-4b²(x-y)a²(x-y)-4b²(x-y)=(x-y)(a²-4b²
a²(x-y)-4b²(x-y)
a²(x-y)-4b²(x-y)
a²(x-y)-4b²(x-y)
=(x-y)(a²-4b²)
=(x-y)(a+2b)(a-2b)
原式 =【a²-(2b²)】(x-y) =(a+2b)(a-2b)(x-y) ~一刻永远523为你解答,祝你学习进步~~~ ~如果你认可我的回答,请及时点击【选为满意回答】按钮~ ~手机提问者在客户端上评价点“满意”即可~~ ~你的采纳是我前进的动力~~~ ~如还有新的问题,请另外向我求助,答题不易,敬请谅解~~
a²(x-y)-4b²(x-y)
=(a²-4b²)(x-y)
=(a-2b)(a+2b)(x-y)
a²(x-y)-4b²(x-y)
=(x-y)(a²-4b²)
=(x-y)(a+2b)(a-2b)