Question

For what value of x is the rational expression below undefined? X-3/3+x

Answer 1

x = -3

Explanation:

The given rational expression is
`(x-3)/(3 + x)`

This expression is undefined when the denominator equal to zero.

So we have to set the denominator equal to zero and find the value of "x" where the expression is undefined.

Here the denominator is 3 + x.

Set the denominator equal to zero and find the value of x.

3 + x = 0

Subtract 3 on both sides, we get

3 + x - 3 = 0 - 3

x = -3

When x = -3, the given rational expression is undefined.