Question

simlify the rational expressions. State any excluded values. 3x - 6 / x - 2

Answer 1

3x-6 not zero

Answer 2

what about X - 2 / x^2 + 3x - 10

Answer 3

you can only cancel off the "non-zero" factors.
The factor (x-2) is non-zero for all 'x' except x=2.
Hence, you can cancel it as long as x≠2