2a=3b=6c,且a,b,c都为实数,求证:ab-cb=ac.(注:a,b,c都为指数,打的时候出问题了),
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![2a=3b=6c,且a,b,c都为实数,求证:ab-cb=ac.(注:a,b,c都为指数,打的时候出问题了),](/uploads/image/z/8842552-16-2.jpg?t=2a%3D3b%3D6c%2C%E4%B8%94a%2Cb%2Cc%E9%83%BD%E4%B8%BA%E5%AE%9E%E6%95%B0%2C%E6%B1%82%E8%AF%81%EF%BC%9Aab-cb%3Dac.%EF%BC%88%E6%B3%A8%EF%BC%9Aa%2Cb%2Cc%E9%83%BD%E4%B8%BA%E6%8C%87%E6%95%B0%2C%E6%89%93%E7%9A%84%E6%97%B6%E5%80%99%E5%87%BA%E9%97%AE%E9%A2%98%E4%BA%86%EF%BC%89%2C)
2a=3b=6c,且a,b,c都为实数,求证:ab-cb=ac.(注:a,b,c都为指数,打的时候出问题了),
2a=3b=6c,且a,b,c都为实数,求证:ab-cb=ac.(注:a,b,c都为指数,打的时候出问题了),
2a=3b=6c,且a,b,c都为实数,求证:ab-cb=ac.(注:a,b,c都为指数,打的时候出问题了),
2a=6c=2c*3c
2(a-c)=3c
2[b(a-c)]=3(b*c)
将3b=2a代入上式中
2[b(a-c)]=2(a*c)
b(a-c)=a*c即ab-cb=ac