Question

write a rational expression involving one variable for which the excluded values are -4 and -7. Please Help!!!!!!

Answer 1

See below.

Explanation:

Values are excluded if they make the denominator zero, so one rational expression could be:

(x^2 - 9) / (x + 4)(x + 7)

- when x = -4 or -7 then the denominator is zero so the values of the function is undefined for these values.