7. [0/3 Points] DETAILS PREVIOUS ANSWERS SCALCET8 5.5.003.MI. Evaluate the integral by making the given substitution. (Use C for the constant of integration.) x x + 21 dx, 21 dx, u = x +21 2 3 x x 9 3. ( +21) (3) + C Remember to use capital C. Enhanced Feedback Please try again. Recall the substitution rule for indefinite integrals: If u = g(x) is a differentiable func [f(a(x))a'(x)dx = [f(u) du. 8. [0/3 Points] DETAILS Evaluate the definite integral. e1/x4 x5 1. (e e16) 4 dx PREVIOUS ANSWERS SCALCET8 5.5.059. Enhanced Feedback Please try again. Recall the substitution rule for definite integrals: If g' is continuous on [a, b] and fis g(b) b f(g(x))g'(x)dx = [g(b) a Jg(a) f(u)du. Try letting u be the expression within the exponent of e. Need Help? Read It