26. The value of C, ('C-C,) equals 27. 29. i=0 Let A be a square matrix of order 2 such that A - 4A + 41 = 0, where I is an identity matrix of order 2. If B A5+4A4+6A3+4A2 + A - 162 I, then det(B) is equal to 5 If 1+x-x =a (1+x)', for all x = R, then a2 is equal to i=0 Let g(x) =||x+2|- 3]. If a denotes the number of relative minima, b denotes the number of relative maxima and c denotes the product of the zeros. Then the value of (a + 2bc) is 30. Normals of parabola y = 4x at P and Q meets at R(x2, 0) and tangents at P and Q meets at T(x1, 0). If x2 = 3, then find the area of quadrilateral PTQR.