Practice
Factor using Difference of Two Squares.a) 81x4 −121y8
(9x2 +11y4)(9x2 −11y4)
(9x2 +11y4)(9x2 −11y4)
b) 81x2 −196y2
(9x +14y)(9x −14y)
(9x +14y)(9x −14y)
c) 16x2 −169y4
(4x +13y2)(4x −13y2)
(4x +13y2)(4x −13y2)
d) 25x2 −4y2
(5x +2y)(5x −2y)
(5x +2y)(5x −2y)
e) 81x4 −196y2
(9x2 +14y)(9x2 −14y)
(9x2 +14y)(9x2 −14y)
f) 16x4 −225y12
(4x2 +15y6)(4x2 −15y6)
(4x2 +15y6)(4x2 −15y6)
g) 64x2 −169y2
(8x +13y)(8x −13y)
(8x +13y)(8x −13y)
h) 49x2 −64y4
(7x +8y2)(7x −8y2)
(7x +8y2)(7x −8y2)
i) 49x2 −121y2
(7x +11y)(7x −11y)
(7x +11y)(7x −11y)
j) 64x2 −225y12
(8x +15y6)(8x −15y6)
(8x +15y6)(8x −15y6)