SOLUTION: 2(2)^2+3(2)(-4)-4(-4)^2=-80 can you show how this was completed

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: 2(2)^2+3(2)(-4)-4(-4)^2=-80 can you show how this was completed      Log On


   

Question 332111: 2(2)^2+3(2)(-4)-4(-4)^2=-80
can you show how this was completed
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
2(2)^2+3(2)(-4)-4(-4)^2=-80
2*4+3*-8-4*16=-80
8-24-64=-80
8-88=-80
80=-80