若多项式x²-3kxy+1/3xy-8合并同类项后不含xy项,求k的值格式是这样的:原式=...........=..........=..........∵该式合并同类项后不含xy项,∴原式=..............=...........∴k=.......
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![若多项式x²-3kxy+1/3xy-8合并同类项后不含xy项,求k的值格式是这样的:原式=...........=..........=..........∵该式合并同类项后不含xy项,∴原式=..............=...........∴k=.......](/uploads/image/z/2582190-54-0.jpg?t=%E8%8B%A5%E5%A4%9A%E9%A1%B9%E5%BC%8Fx%26%23178%3B-3kxy%2B1%2F3xy-8%E5%90%88%E5%B9%B6%E5%90%8C%E7%B1%BB%E9%A1%B9%E5%90%8E%E4%B8%8D%E5%90%ABxy%E9%A1%B9%2C%E6%B1%82k%E7%9A%84%E5%80%BC%E6%A0%BC%E5%BC%8F%E6%98%AF%E8%BF%99%E6%A0%B7%E7%9A%84%EF%BC%9A%E5%8E%9F%E5%BC%8F%3D...........%3D..........%3D..........%E2%88%B5%E8%AF%A5%E5%BC%8F%E5%90%88%E5%B9%B6%E5%90%8C%E7%B1%BB%E9%A1%B9%E5%90%8E%E4%B8%8D%E5%90%ABxy%E9%A1%B9%EF%BC%8C%E2%88%B4%E5%8E%9F%E5%BC%8F%3D..............%3D...........%E2%88%B4k%3D.......)
若多项式x²-3kxy+1/3xy-8合并同类项后不含xy项,求k的值格式是这样的:原式=...........=..........=..........∵该式合并同类项后不含xy项,∴原式=..............=...........∴k=.......
若多项式x²-3kxy+1/3xy-8合并同类项后不含xy项,求k的值
格式是这样的:
原式=...........
=..........
=..........
∵该式合并同类项后不含xy项,
∴原式=..............
=...........
∴k=.......
若多项式x²-3kxy+1/3xy-8合并同类项后不含xy项,求k的值格式是这样的:原式=...........=..........=..........∵该式合并同类项后不含xy项,∴原式=..............=...........∴k=.......
x²-3kxy+1/3xy-8=x²+(1/3-3k)xy-8
1/3-3k=0
k=1/9