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 1 0 3 0 A = and B = 0 2 0 4 then English · Bihar (TRE 2.0)-2023 Q03 If A and B are invertible matrices of the same order, then English · Bihar (TRE 2.0)-2023 Q04 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 Q05 If A is an invertible matrix of order 2, then det (A-1) is equal to English · Bihar (TRE 2.0)-2023 Q06 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