If the equation 9x2 + 6kx + 4 = 0 has equal roots then k = ?
The equation 9x2 + 6kx + 4 = 0 has equal roots a = 9 b = 6k c = 4 Then D = b2 - 4ac = 0 (6k)2 - 4.9.4 = 0 36k2 = 144 k2 = 4 taking square root both sides k = 2 or k = - 2
504 MCQ for effective preparation of the test of Quadratic Equations of Mathematics section.
Read the MCQ statement: If the equation 9x2 + 6kx + 4 = 0 has equal roots then k = ? , keenly and apply the method you have learn through the video lessons for Quadratic Equations to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 420-9152.