



 
Rachel, This is a quadratic equation so its graph is a parabola. First find xintercepts, that is find the points on the graph that have y = 0. If y = 0 then
The left side of this expression has a common factor of x to it can be factored to yield
What are the points where the graph crosses the xaxis? By the symmetry of the parabola the xcoordinate of the minimum point is midway between the intercepts. What is the xcoordinate of the minimum point? What is the minimum value? I hope this helps,  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 