Which numbers cannot be used in place of the variable in each rational expression.
2y+1/y^2-y-6
(2y+1()/y^2-y-6)
= (2y+1)/[(y-3)(y+2)]
We cannot divide by zero.
When y = 3 or when y = -2 we would be dividing by zero
so x cannot be 3 or -2
2y+1/y^2-y-6
= (2y+1)/[(y-3)(y+2)]
We cannot divide by zero.
When y = 3 or when y = -2 we would be dividing by zero
so x cannot be 3 or -2