C-03-Q215mediumsingle_mcqIf a2+b2=9a^2 + b^2 = 9a2+b2=9 and ab=3ab = 3ab=3, (a−b)2=?(a-b)^2 = ?(a−b)2=?a333b999c151515d666ব্যাখ্যা(a−b)2=a2+b2−2ab=9−2(3)=9−6=3(a-b)^2 = a^2 + b^2 - 2ab = 9 - 2(3) = 9 - 6 = 3(a−b)2=a2+b2−2ab=9−2(3)=9−6=3.