If x = -2 and y = 1, by using an identity find the value of the following:
(i) (4y2–9x2) (16y4+36x2y2+81x4)
(ii) 
(iii) 
(i)
(ii)
(iii)
6
If x = -2 and y = 1, by using an identity find the value of the following:
(i) (4y2–9x2) (16y4+36x2y2+81x4)
(ii)
(iii)
(i)
(ii)
(iii)