Question

For what value of x would the expression below be undefined 5x-18/x-7

Answer 1

Answer:

D. 7

Step-by-step explanation:

The given expression is

$\frac{5x-18}{x-7}$

This is a rational expression.

This expression undefined, when the denominator is zero.

We equate the denominator to zero  to get;

$x-7=0$

This implies that;

x=7

Answer 2

Answer:

The correct answer option is 7.

Step-by-step explanation:

We are given the following expression and we are to determine whether which of the given options for the value of x would the expression become undefined:

$\frac { 5 x - 1 8 } { x - 7 }$

We know that the expression is undefined when the denominator equals zero. So to make the denominator zero, the value of x should be 7.