AJ L. answered 07/16/23
Patient and knowledgeable Algebra Tutor committed to student mastery
Part A + B
f(x)-g(x) = 4x^2-3x+5-(18/√x)
Therefore, x≰ 0, which means the domain of f(x)-g(x) is (0,∞)
Part C
(f-g)(9) = 4(9)^2-3(9)+5-(18/√9) = 4(81)-27+5-(18/3) = 324-22-6 = 302-6 = 296
Hope this helped!

AJ L.
07/16/23
Ria T.
thank you!07/16/23