THIS IS A PSYCHOLOGY QUESTION, THERE'S JUST NO OPTION FOR PSYCH Without learning, we would have to learn not to touch a hot stove by touching a hot stove.

what kind of learning???

To solve this integral, what you can do is split it up as follows: (1) ∫40(x2−4)dx=∫40(x2)dx−∫40(4)dx. to integrate  4  as an  indefinite integral, a good rule of thumb is  by  an equation below  for  polynomials; . (2) ∫xa=xa+1a+1+c , where a is any number. c denotes some constant that is crucial when doing