a^2+9b^2+6a-6b+10=0a^2+6a+9+9b^2-6b+1=0(a+3)^2+(3b-1)^2=0(a+3)^2=0,(3b-1)^2=0a=-3b=1/3[6a^(m+2) b^(n+2)-4a^(m+1) b^(n+1)+2a^m b^n]/(-2a^m b^n）=[6a^2*a^m*b^2* b^n-4a*a^m*b* b^n+2a^m b^n]/(-2a^m b^n）=...