04-24-2016, 03:42 PM

Hey guys, I'm having a problem expanding expressions involving decimal numbers.

I type the expression (in CAS) then I put to simplify, but it doesn't. It returns the same expression, but if I do with natural numbers it does expand.

For example, for (x-1.95)(x-4)(x+7.98) it should return x^3+2.03 x^2-39.681 x+62.244, but it doesn't, it returns the same input expression.

But for example, if I type (x-1)(x-4)(x+7) and put to simlify, it does return the expanded form x^3+2 x^2-31 x+28

Does anyone know how to overcome this?

Thanks a lot!

I type the expression (in CAS) then I put to simplify, but it doesn't. It returns the same expression, but if I do with natural numbers it does expand.

For example, for (x-1.95)(x-4)(x+7.98) it should return x^3+2.03 x^2-39.681 x+62.244, but it doesn't, it returns the same input expression.

But for example, if I type (x-1)(x-4)(x+7) and put to simlify, it does return the expanded form x^3+2 x^2-31 x+28

Does anyone know how to overcome this?

Thanks a lot!