The quadratic equation depends on the real parameter .
MATHEMATICS · Multi-part · A Level · Mathematics · Algebra and Functions · Algebra and Functions
Problem
The quadratic equation 2x2+kx+6=0 depends on the real parameter k.
(i) Find the value(s) of k for which the equation has equal real roots.
(ii) Taking the positive value of k obtained in part (i), determine the root(s) of the equation.
(iii) Using the root(s) found in part (ii), evaluate 5x2−4x.