Question 59277
{{{2x^2+3xy-4y^2}}} when x=2 and y= -4
{{{2(2)^2+3(2)(-4)-4(-4)^2}}}
{{{2(4)+6(-4)-4(16)}}}
{{{8-24-64}}}
{{{8-88}}}
{{{highlight(-80)}}}
Happy Calculating!!!