Please answer with explanation of highlighted portions.

S f2 ( x ) dx = [x In (x ) dx Main Post Your main post should include the following: 1. State your indefinite integral. 2. Evaluate your indefinite integral, clearly stating what method you are using when evaluating the integral (basic integration, integration by substitution, or integration by parts). Depending upon your integral, you may have to integrate more than once. In such cases, state the integration method used for each integration. Present all steps needed to evaluate your integral(s) - do not skip steps or have dangling expressions. Explanations, whether they be in the form of written words or spoken words, are expected throughout the mathematical work you present in your main post. You have options for how you create your main post: 1. Neatly handwrite your work and explanations on a single sheet of paper. Insert the image of that work into your main post