Please solve in a paper. Thank you

X On a test, Amal is asked to calculate dx. They provide the following answer: V/31x2 - 32 Amal's Answer: Let u = 31x - 32. Then du - 62x dx or _ du = x dx. This gives Jo 3/31x2-32 X dx = Jo 62 3/u du = So 62us du = 245 42'3 = 5 248 . a) Explain why Amal's answer is incorrect. b) Provide a correct answer to Amal's test question. (Your answer should be a simplified fraction.)