当k=多少时,多项式2x²-4xy+3y²与-3kxy+5的和不含xy项若(x+n)²=x²+x+m,则m=____n=_____(a²-2ab+b²)除以(a-b)=
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![当k=多少时,多项式2x²-4xy+3y²与-3kxy+5的和不含xy项若(x+n)²=x²+x+m,则m=____n=_____(a²-2ab+b²)除以(a-b)=](/uploads/image/z/4346932-4-2.jpg?t=%E5%BD%93k%3D%E5%A4%9A%E5%B0%91%E6%97%B6%2C%E5%A4%9A%E9%A1%B9%E5%BC%8F2x%26%23178%3B-4xy%2B3y%26%23178%3B%E4%B8%8E-3kxy%2B5%E7%9A%84%E5%92%8C%E4%B8%8D%E5%90%ABxy%E9%A1%B9%E8%8B%A5%EF%BC%88x%2Bn%EF%BC%89%26%23178%3B%3Dx%26%23178%3B%2Bx%2Bm%2C%E5%88%99m%3D____n%3D_____%EF%BC%88a%26%23178%3B-2ab%2Bb%26%23178%3B%EF%BC%89%E9%99%A4%E4%BB%A5%28a-b%29%3D)
当k=多少时,多项式2x²-4xy+3y²与-3kxy+5的和不含xy项若(x+n)²=x²+x+m,则m=____n=_____(a²-2ab+b²)除以(a-b)=
当k=多少时,多项式2x²-4xy+3y²与-3kxy+5的和不含xy项
若(x+n)²=x²+x+m,则m=____n=_____
(a²-2ab+b²)除以(a-b)=
当k=多少时,多项式2x²-4xy+3y²与-3kxy+5的和不含xy项若(x+n)²=x²+x+m,则m=____n=_____(a²-2ab+b²)除以(a-b)=
k=-4/3
m=1/4 n=1/2
a-b