Log in to upvote 0 Log in to downvote One of the roots of quadratic equation 2x^2 + kx - 2 = 0 is -2, find k. Doubtly Asked 24 Oct 2026 Save WhatsApp Report Sign in to comment
Log in to upvote 0 Log in to downvote Answer: \(k = 3\)Put \(x = -2\):\[2(4) + k(-2) - 2 = 0\]\[6 - 2k = 0\]\[k = 3\] AI Doubtly AI · 24 Oct 2026 AI-verified · Oct 2026 Report Was this answer helpful? Thanks for the feedback. Sign up free to save answers and ask your own doubts Yes No Sign in to comment