Question

For which rational expression is –5 an excluded value of x?x-5/6x+5/66/x-56/x+5

Answer 1

For 6/x+5  –5 is an excluded value of x.

So, Option D is correct answer.

Step-by-step explanation:

We need to find for which rational expression is –5 an excluded value of x.

A value of x is excluded in a rational expression if it makes the denominator of that expression equal to zero and makes the expression undefined.

In the options given below, if we put x= -5 the only option D will become undefined i.e

$\frac{6}{x+5}\\Put\,\,x=-5\\=\frac{6}{-5+5}\\=\frac{6}{0}$

As we know 6/0 = undefined so, for 6/x+5  –5 is an excluded value of x.

So, Option D is correct answer.

Keywords: Solving Rational Expression

Learn more about Solving Rational Expression at:

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Answer 2

Answer the last

one

Step-by-step explanation: