set y=x^m x^2*m(m-1)[x^(m-2)]-x*m[x^(m-1)]=0 m(m-1)-m=0 m=0 , 2 y=c1+c2*x^2 y(2)=5=c1+4 c2 y'=2 c2*x y'(2)=8=4 c2 c2=2 c1=-3 y=-3+2x^2