Practice problem
Evaluate
2x+2xy+2y2x + 2xy + 2y2x+2xy+2y
2x+2y2x + 2y2x+2y
2x+4y2x + 4y2x+4y
2x+2y+y22x + 2y + y^22x+2y+y2
Type a concept, like “slope” or “photosynthesis”.