Practice problem
Which of the following give us a perfect square trinomial when expanded?
(x+1)2(x+1)^2(x+1)2
(x−1)2(x-1)^2(x−1)2
(x+2x−8)2(x+2x-8)^2(x+2x−8)2
(x2+2x+1)2(x^2 + 2x + 1)^2(x2+2x+1)2
(a+b)2(a+b)^2(a+b)2
(a−b)2(a-b)^2(a−b)2
Type a concept, like “slope” or “photosynthesis”.