The equation$$x^2-9x+k=0$$has two roots, one of which is twice the other. Find both roots and the va

Question

The equation$$x^2-9x+k=0$$has two roots, one of which is twice the other. Find both roots and the value of $k$.

Accepted Answer

Roots $3,6$; $k=18$.

Quadratic Functions, Equations and Inequalities