(3x+___)²=____+12xy+____.已知:(x-3y)²=x²-6xy+(ky)²,则k=____.
问题描述:
(3x+___)²=____+12xy+____.已知:(x-3y)²=x²-6xy+(ky)²,则k=____.
答
(3x+___)²=____+12xy+____.已知:(x-3y)²=x²-6xy+(ky)²,则k=____.