find the total area between the region and the the x-axis.

y = -x^2 - 2x when -3 <= x <= 2 (which i took it as [-3,2])

This was my work:

I integrated the equation:

-(1/3)x^3 - x^2 [-3,2]

I plugged in the numbers and got(plugged in 2 then -3):

-(8/3) - 4 - (9 - 9)... which would equal -20/3, but the answer said +28/3.