是這樣嗎?﹙x-y﹚÷﹙x+y﹚=2,
∴代數(shù)式﹙x-y﹚÷﹙x+y﹚-2(x+y)÷﹙x-y﹚=2﹣2×﹙1/2﹚=2﹣1=1能詳細(xì)一點(diǎn)嗎?沒有看懂什么的QAQ∵﹙x-y﹚÷﹙x+y﹚=2∴﹙x﹢y﹚÷﹙x﹣y﹚=1/2 ∴﹙x-y﹚÷﹙x+y﹚﹣2(x+y)÷﹙x-y﹚=﹛﹙x-y﹚÷﹙x+y﹚﹜﹣2﹛(x+y)÷﹙x-y﹚﹜=2﹣2×﹙1/2﹚=2﹣1=1
已知x-y÷x+y=2,求代數(shù)式x-y÷x+y-2(x+y)÷x-y的值 在這里.除就是分號(hào)【?】 速求!
已知x-y÷x+y=2,求代數(shù)式x-y÷x+y-2(x+y)÷x-y的值 在這里.除就是分號(hào)【?】 速求!
數(shù)學(xué)人氣:175 ℃時(shí)間:2019-10-23 13:37:05
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