Question

What are the excluded values?

x-7/x+9

x = 7
x = 9
x = -9
none of the above

Answer 1

x = -9

got it right in my math exam

Answer 2

Option (c) is correct.

The values that are excluded for the given expression
`(x-7)/(x+9)` is -9 .

Explanation:

Given: Expression
`(x-7)/(x+9)`

We have to find the values that are excluded for the given expression
`(x-7)/(x+9)`

For rational numbers , we exclude those values for which the denominator of the rational expression is 0.

Consider the given expression
`(x-7)/(x+9)`

Denominator of the given expression is x + 9

Put x+ 9 = 0

We have x = - 9

Thus, The values that are excluded for the given expression
`(x-7)/(x+9)` is -9 .