Practice
Factor using Difference of Two Squares.a) 81x2 −64
(9x +8)(9x −8)
(9x +8)(9x −8)
b) 81x2 −121
(9x +11)(9x −11)
(9x +11)(9x −11)
c) 64x4 −169
(8x2 +13)(8x2 −13)
(8x2 +13)(8x2 −13)
d) 9x2 −4
(3x +2)(3x −2)
(3x +2)(3x −2)
e) 49x4 −225
(7x2 +15)(7x2 −15)
(7x2 +15)(7x2 −15)
f) 64x8 −169
(8x4 +13)(8x4 −13)
(8x4 +13)(8x4 −13)
g) 49x2 −169
(7x +13)(7x −13)
(7x +13)(7x −13)
h) 81x2 −25
(9x +5)(9x −5)
(9x +5)(9x −5)
i) 49x2 −4
(7x +2)(7x −2)
(7x +2)(7x −2)
j) 36x8 −169
(6x4 +13)(6x4 −13)
(6x4 +13)(6x4 −13)