1-x^2/x+1+x^3/x-1+2x^2+x/x
Đáp án:
$#thuanhuy$
`\text{Gửi bn!}`
(-x^2/x+x^3/x+x/x)+(1+1-1)
=x^2/x+1 =x+1
Câu thơ:"những kẻ vá trời khi lỡ bước
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