Question

Which represents all the values of x that make the rational expression undefined? x = –3 x = 7 x = –7 or x = 7 x = –3 or x = 3

Answer 1

-3

Explanation:

Answer 2

The value of x would be -3.

Explanation:

Consider the complete question is,

'Which represents all the values of x that make the rational expression
`(-6x + 42)/(3x + 9)` undefined?'

Since, the rational expression is defined for all real values except those for which denominator is equal to zero,

If 3x + 9 = 0,

3x = -9

`\implies x =-(9)/(3)=-3`

Hence the values of x that make the rational expression undefined would be -3.