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

For what value of x would the expression below be undefined 5x-18/x-7-example-1
User Srgsanky
by
8.0k points

2 Answers

5 votes

Answer:

D. 7

Explanation:

The given expression is


(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

User Christian Seifert
by
7.5k points
6 votes

Answer:

The correct answer option is 7.

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.

User Leib Rozenblium
by
8.0k points

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