Evaluate the following indefinite integral.

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}(2x^6+x^2-x-2)dx$

Use properties of the indefinite integral to express the following integral in terms of the simplest integrals:

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}(-4x^2+4x)dx$