Recent content by jrdunaway

Homework Statement Solve for X Homework Equations x^2 + x + 1 > 2The Attempt at a Solution x2 + x - 1 > 0 (x + 2)(x - 1/2) > 0 x > 2 x > 1/2 Wolfram Alpha said that the solutions for X are: x>1/2 (sqrt(5)-1) and x<1/2 (-1-sqrt(5)) what did I do wrong?

PhysicsForums, you guys have exceeded my expectations! Thank you! I'll be back soon I'm sure :)

Homework Statement 2. What is wrong with the following "proof"? Let x = y. Then x2 =xy, x2 - y2 =xy - y , (x + y)(x -y) = y(x - y), x + y = y, 2y = y, 2= 1.Homework Equations It's obvious that x + y =/= y, but I do not know how to "prove" this, i.e. which proof from algebra is applicable...