Practice problem
Is the left hand expression, 4x2+4x+14x^2+4x+14x2+4x+1, a perfect square?
No, 4x24x^24x2 should be 2x22x^22x2
Yes
No, 4x4x4x should be 2x2x2x
No, 111 should be 222
Type a concept, like “slope” or “photosynthesis”.