Math Chapter Wise question with answer

Q01 If α and β are the roots of the equation x2 + x + 1 = 0 then 1 β α β α β equals: English · EMRS PGT-2023 Q02 If A and B are invertible matrices of the same order, then English · Bihar (TRE 2.0)-2023 Q03 If the area of a triangle with the vertices (-3, 0), (3, 0) and (0, k) is 9 sq. units, then the value of k is English · Bihar (TRE 2.0)-2023 Q04 If ∆ ∆ ∆1 = 2 ax x 1 by y 1 cz z 1 and ∆ ∆ ∆2 = a b c x y z zy zx xy then English · Bihar (TRE 2.0)-2023 Q05 If the order of matrix A = 4 × 3, order of matrix B = 4 × 5 and order of matrix C = 7 × 3, then the order of (At ×... English · NVS PGT 2022 Q06 If A and B are square matrices of order 3 such that det A = −1 and det B = 3, then is: English · NVS PGT 2022