int_(2)^(3)(dx)/(sqrt((x-2)(3-x)))=

int(dx)/(sqrt((x-2)(x-3)))=

int_(1)^(2)(dx)/(sqrt(x^(2)+4x+3))

int(dx)/(sqrt(1-2x)+sqrt(3-2x)) =

int_(0)^(3)x^(2)sqrt(3-x)dx

int_(-2)^(2)(x-3)sqrt(4-x^(2))dx

int_(3)^(5) (dx)/(sqrt(x+4)+sqrt(x-2))=

int_(0)^(1)((sqrt(2)x-3)/(x^(3)))dx=

int_(1)^(2)(x^(3)+x+1)/(sqrt(x))dx=

Evaluate the following improper integrals : (a) int_(-3)^(3)(x^(2)dx)/(sqrt(9-x^(2))), (b) int_(0)^(2)sqrt((2+x)/(2-x))dx.