Question

if x=-2 and y=1 , by using identity find the value of (4y2-9x2)(16y4+36x2y2+81x4)

Answer 1

hey  friend
here is the  answer you were looking for
(4y^2-9x^2)(16y^4+36x^2y^2+81x^4)
(4*1-9*4)(16*1+36*4*1+81*16)
(4-36)(16+144+1296)
-32*1456
=-46592
thanks