b=(2)/(sqrt(a)+3)+(3)/(sqrt(x)-3)-frac(}{x-9)

To solve the expression , we need to find a common denominator and simplify the terms.1. **Combine the fractions:** 2. **Find the common denominator for the first two fractions:** 3. **Rewrite the first two fractions with the common denominator:** 4. **Simplify the numerators:** 5. **Combine the numerators over the common denominator:** 6. **Simplify the combined numerator:** 7. **Subtract the third fraction:** 8. **Combine the fractions:** 9. **Rationalize the numerator:** 10. **Simplify the numerator:** Thus, the simplified form of the given expression is: