1) Real and distinct 2) Complex 3) Real and equal 4) None Solution: (1) Real and distinct (a - b) x2 + 5 (a + b) x - 2 (a - b) = 0 = 25 (a +... View Article
1) A.P. 2) G.P. 3) H.P 4) None of these Solution: (1) A.P. ax2 + 2bx + c = 0 and b2 = ac x = [- 2b ± √4b2 - 4ac] / 2a = - b / a Now x = - b... View Article
1) G. P. 2) H.P. 3) A.P. 4) None of these Solution: (1) G. P. ɑ, β are roots of the equation ax2 + bx + c = 0 ɑ + β = - b / a, ɑβ = c / a... View Article
1) A.P. 2) G.P. 3) H.P. 4) None of these Solution: (3) H.P. a (b - c)x2 + b (c - a) x + c (a - b) = 0 The roots are equal. Δ = 0 b2 (c - a)2... View Article