Math Chapter Wise Matrices And Determinants English MCQ UP PCS (Pre) 2009 Q.If 1 1 A 2 1 − = −, a 1 B b 1 = − and (A+B)2 = A2 + B2, then the values of a and b are respectively A1, 4 B1, 2 C4, 2 D2, 1 Show answer Correct answer: 1, 4