Đáp án:
Khi `x+y-2=0` thì `M=2008`
Giải thích các bước giải:
`M=x^3+x^2y-2x^2-xy-y^2+3y+x+2006`
`=x^2(x+y-2)-xy-y^2+2y+y+x+2006`
`=x^{2}.0-y(x+y-2)+y+x+2006`
`=-y.0+y+x-2+2008`
`=x+y-2+2008`
`=0+2008`
`=2008`
Vậy khi `x+y-2=0` thì `M=2008`
`M=x^3 + x^2y - 2x^2 - xy-y^2 + 3y + x +2006`
`=>M=(x^3+x^2y - 2x^2 ) - (xy+y^2 - 2y) + (y+x+2) + 2004`
`=> M =x^2(x+y-2) - y(x+y-2) +(x+y-2) + 2004`
`text{thay } x+y-2=0 text{vào M}`
`=> M =x^2.0 -y.0 + 0 + 2004`
`=> M = 0 - 0 + 0 + 2004 = 2004`
`text{Vậy M=2004}`.
mọi người ơi, làm thế nào để có hình khi tắt cam thay vì dùng tên khi đang tham gia cuộc họp trên máy tính (nhìn hình)
Đoạn thẳng là gì?chép mạng,sai=report nhanh,hay=5 sao ctlhn:))))
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bài vẽ của toi đc lên trang của trường rồi mn ơi vẽ mầm vui sướng nhớ đẹp zô, app
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Giúp mình với ạ🥺 Mình đang cần gấp:<
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