Area

In Exercises $47-50,$ find the total area between the region and the $x-$axis.

$47.y=-x^2-2x,-3x2$

$48.y=3x^2-3,-2x2$

$49.y=x^3-3x^2+2x,0x2$

$50.y=x^{\frac{1}{3}}-x,-1x8$