How to Solve Quadratic expressions/equations (lesson - 6)
In this video, questions have been solved to determine whether the equation has 2 roots, 1 root, or no roots using quadratic equation discriminant. b^2-4ac Question: The following equations have a repeated root. Find the value of k in each case. (a) x²+3x-k=0 (b) x²-18x+k=0 (c) 4x²-kx+6=0 Question: The equations have the number of roots shown in brackets. Deduce as much as you can about the value of k. (a) x²+3x+k=0 (2) (b) x²-4x+3k=0 (1) (c) kx²-5x+7=0 (0) (d) x²-kx+4=0 (2) #quadratic #quadraticequation #completingsquare #quadratics #quadraticexpression #formulae #roots #surds #o-levels #educational #education #academic #mathematics
In this video, questions have been solved to determine whether the equation has 2 roots, 1 root, or no roots using quadratic equation discriminant. b^2-4ac Question: The following equations have a repeated root. Find the value of k in each case. (a) x²+3x-k=0 (b) x²-18x+k=0 (c) 4x²-kx+6=0 Question: The equations have the number of roots shown in brackets. Deduce as much as you can about the value of k. (a) x²+3x+k=0 (2) (b) x²-4x+3k=0 (1) (c) kx²-5x+7=0 (0) (d) x²-kx+4=0 (2) #quadratic #quadraticequation #completingsquare #quadratics #quadraticexpression #formulae #roots #surds #o-levels #educational #education #academic #mathematics