B. [7 pts] Consider the integral 6 12 + 4x + 5 dx. i. [2 pts] Explain to Taylor and Harper why x2 + 4x + 5 is irreducible. ii. [5 pts] Calculate 6 12 + 4x + 5 dx by first completing the square in the denominator. Make sure to show all of your steps! C. [3 pts] Explain to Taylor and Harper why it was important to characterize quadratic polynomials in the preceding examples as reducible or irreducible