填空1.如果a+b=1,则9-a-b=_____.2.|a|=3,b=2,且|a-b|=b-a,则a+b=______.3.4x^2 + 7x - 5=[8x^2 -______+11]-[______-9x+______].4.若4x^n -(m+1/2)x^3 -1/3是关于x的五次二项式,则m,n满足的条件是_______?5.若x-y=3,x^2·y+xy^2 =15,则3y-5x^
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![填空1.如果a+b=1,则9-a-b=_____.2.|a|=3,b=2,且|a-b|=b-a,则a+b=______.3.4x^2 + 7x - 5=[8x^2 -______+11]-[______-9x+______].4.若4x^n -(m+1/2)x^3 -1/3是关于x的五次二项式,则m,n满足的条件是_______?5.若x-y=3,x^2·y+xy^2 =15,则3y-5x^](/uploads/image/z/12625580-20-0.jpg?t=%E5%A1%AB%E7%A9%BA1.%E5%A6%82%E6%9E%9Ca%2Bb%3D1%2C%E5%88%999-a-b%3D_____.2.%7Ca%7C%3D3%2Cb%3D2%2C%E4%B8%94%7Ca-b%7C%3Db-a%2C%E5%88%99a%2Bb%3D______.3.4x%5E2+%2B+7x+-+5%3D%5B8x%5E2+-______%2B11%5D-%5B______-9x%2B______%5D.4.%E8%8B%A54x%5En+-%28m%2B1%2F2%29x%5E3+-1%2F3%E6%98%AF%E5%85%B3%E4%BA%8Ex%E7%9A%84%E4%BA%94%E6%AC%A1%E4%BA%8C%E9%A1%B9%E5%BC%8F%2C%E5%88%99m%2Cn%E6%BB%A1%E8%B6%B3%E7%9A%84%E6%9D%A1%E4%BB%B6%E6%98%AF_______%3F5.%E8%8B%A5x-y%3D3%2Cx%5E2%C2%B7y%2Bxy%5E2+%3D15%2C%E5%88%993y-5x%5E)
填空1.如果a+b=1,则9-a-b=_____.2.|a|=3,b=2,且|a-b|=b-a,则a+b=______.3.4x^2 + 7x - 5=[8x^2 -______+11]-[______-9x+______].4.若4x^n -(m+1/2)x^3 -1/3是关于x的五次二项式,则m,n满足的条件是_______?5.若x-y=3,x^2·y+xy^2 =15,则3y-5x^
填空
1.如果a+b=1,则9-a-b=_____.
2.|a|=3,b=2,且|a-b|=b-a,则a+b=______.
3.4x^2 + 7x - 5=[8x^2 -______+11]-[______-9x+______].
4.若4x^n -(m+1/2)x^3 -1/3是关于x的五次二项式,则m,n满足的条件是_______?
5.若x-y=3,x^2·y+xy^2 =15,则3y-5x^2 -3x -5xy^2=________?
第5题我打错了,应该是若x-y=3,x^2 y +xy^2 =15,则3y-5x^2 -3x -5xy^2=________?
填空1.如果a+b=1,则9-a-b=_____.2.|a|=3,b=2,且|a-b|=b-a,则a+b=______.3.4x^2 + 7x - 5=[8x^2 -______+11]-[______-9x+______].4.若4x^n -(m+1/2)x^3 -1/3是关于x的五次二项式,则m,n满足的条件是_______?5.若x-y=3,x^2·y+xy^2 =15,则3y-5x^
1.9-a-b=9-(a+b)=9-1=8
2.|a-b|=b-a说明a-b