Linear AlgebraMediumSymmetric Matrices & Quadratic Forms ShareSymmetric Matrices & Quadratic Forms · Medium problemCompleting the square writes q(x,y)=x2+4xy+7y2q(x, y) = x^2 + 4xy + 7y^2q(x,y)=x2+4xy+7y2 as (x+2y)2+c y2(x + 2y)^2 + c\,y^2(x+2y)2+cy2. Find ccc.Check Show answer Walk through it step by step Practice more like this Review this concept