Calculus Section 3.2 [ATTACH=full]3616[/ATTACH]
y=(e^x+2)(2e^x-1) (d/dx)((e^x+2)(2e^x-1)) =(d/dx)((e^x+2)*(2e^x-1)+(d/dx)(2e^x-1)*(e^x+2) = e^x*(2e^x-1)+ 2e^x*(e^x+2) = 2e^(2x) - e^x+ 4 e^x + 2e^(2 x) = 4e^(2x) - e^x+ 4 e^x =3e^x + 4e^(2 x) so