(3n-4)2=9n2 - 24n + 16
(2x+y2)= 4x2 + 4x*y2 + y4
(b2-3a)*(b2 + 3a) = b4 - 9a2
(m-2)2 - (m+1)*(m-3) = 7 -m
(3n-4)2=9n2 - 24n + 16
(2x+y2)= 4x2 + 4x*y2 + y4
(b2-3a)*(b2 + 3a) = b4 - 9a2
(m-2)2 - (m+1)*(m-3) = 7 -m