Define Markovnikov's rule:
When adding an HX to an alkene or an alkyne, the halogen is bonded to the carbon with most substituents or hydrogens.
Find x: x^2 + 2= 6
To find x first must subtract 2 from 6 giving 4, and then square root the 4 to get plus or minus 2 6-2= 4 Squar4= +,-2 x= 2, x= -2
Use the knowledge of derivatives and find the derivative of the following: x^3 +5x^6-cos(2x)
Taking each derivative it would be 3x^2 + 30x^5 + 2sin(2x)