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) 25x2 −16
(5x +4)(5x −4)
(5x +4)(5x −4)
d) 49x2 −225
(7x +15)(7x −15)
(7x +15)(7x −15)
e) 16x8 −25
(4x4 +5)(4x4 −5)
(4x4 +5)(4x4 −5)
f) 36x4 −121
(6x2 +11)(6x2 −11)
(6x2 +11)(6x2 −11)
g) 4x2 −25
(2x +5)(2x −5)
(2x +5)(2x −5)
h) 25x2 −121
(5x +11)(5x −11)
(5x +11)(5x −11)
i) 4x2 −169
(2x +13)(2x −13)
(2x +13)(2x −13)
j) 81x2 −121
(9x +11)(9x −11)
(9x +11)(9x −11)