Hello,

In the solutions at the back of the book, it says "x^3(abc)=y^3(abc), thus x=y, and then a=b=c." But how is this true? I can have a≠b≠c, for example, 2, 3, 4, and x^3*24=y^3*24, and this is true for all x=y. There is no need for a=b=c right?

Thanks,

Tina Jin