Question

Find all values of the variable x for which the rational expression is undefined.

8x+9/x^2-13x+42
The expression is undefined when x=

Answer 1

Explanation:

8x+9/x^2-13x+42

Write 8 x as a fraction with denominator 1

8x+9/x^2-13x+42

then we multipuly 8x/1 by x^2/x^2