P(x)+Q(x) no se como hacerlo

answer is 144

step-by-step explanation:

b. f(x) = –√x + 3this is the correct answer

(f/g)(x) = (2x+1)/(x^2 - 8x)

the domain is the set of all x in the real numbers such that denominator is not 0:

x^2 - 8x ≠ 0 ⇔ x(x-8) ≠ 0 ⇒ x ≠ 0, 8

so the domain is {x ∈ r | x ≠ 0 and x ≠ 8}