What values for x, if any, must be excluded in each of the following algebraic fractions?
1.17/x
2.3/(x-2)=
3.3x/((x+1)(x-2))=
4.(2x-1)/(3x^2+x-2)
Division by zero is not allowed. So, if a fraction has a polynomial like
1/(x-a) then x =a must be excluded.
