How does one tackle a question like
limit as x -> + or - inf of [sqrt(f(x)) - sqrt(g(x))]
f(x) and g(x) are both quadratics of the form ax^2 + bx + c
I multiplied by the conjugate but then I get square roots in the denominator going to infinity.
here is the question:
after multiplying by the conjugate I get
Then i divide both top and bottom by x to get 11/4
if I take the limit going to negative infinity will the answer still be 11/4?