1.

Evaluate the integral 25(26 - 10) dx, by making the appropriate substitution: U = (26 - 10) 18 dr =\fConsider the indefinite integral I .2 - 4 dr: This can be transformed into a basic integral by letting and du = Performing the substitution yields the integral duConsider the indefinite integral dr: (12 + 1)2 This can be transformed into a basic integral by letting and du = Performing the substitution yields the integral du