Question

( begin{aligned} & int_{x^{8}}^{10} sqrt{frac{1}{x^{9}}}left(x^{2}+xright) d x =& int x(x+1) log _{x^{-8}+2 x^{-9}} d y =& int x^{1 / 10}(x+1)^{10} sqrt{x+2} d x text { tet } quad x(x+2)=t & frac{1}{2 x+2} &=frac{10}{11}left[x^{2}+2 xright]^{1 / 10}+C end{aligned} )

# The value of the integral [(x2 + x)(x + 2x=9)1/10 dx is (A) : (x2 + 2x)+110 + c (B) (x + 1)1110 +C (D) none of these (C) & (x +1310 + c the origin to form an isosceles triangle with the

Solution