How do you find the restricted values for (x^2+x+15)/(x^2-3x)?

See explanation

Explanation:

The restricted values for rational expressions are based on the fact that you cannot divide by zero, so you must restrict any value for any variable in the denominator of a rational expression that would make the value of the denominator be zero.

Hence

${x}^{2} - 3 x = 0 \implies x \left(x - 3\right) = 0 \implies x = 0 \mathmr{and} x = 3$

Hence the restricted values are $0 , 3$