If both roots of the quadratic equation are less than

MATHEMATICS · Single correct · A Level · Mathematics · Algebra and Functions · Algebra and Functions

Problem

If both roots of the quadratic equation x2−2kx+k2+k−5=0x^2-2kx+k^2+k-5=0 are less than 55, then kk lies in the interval (1) (−∞,4)(-\infty,4) (2) [4,5][4,5] (3) (5,6)(5,6) (4) (6,∞)(6,\infty)

Related theory

Browse the problem library