Practice
Factor using Difference of Two Squares.a) 81x2 −169
(9x +13)(9x −13)
(9x +13)(9x −13)
b) 64x8 −121
(8x4 +11)(8x4 −11)
(8x4 +11)(8x4 −11)
c) 49x2 −25
(7x +5)(7x −5)
(7x +5)(7x −5)
d) 16x2 −25
(4x +5)(4x −5)
(4x +5)(4x −5)
e) 49x2 −81
(7x +9)(7x −9)
(7x +9)(7x −9)
f) 64x2 −81
(8x +9)(8x −9)
(8x +9)(8x −9)
g) 64x2 −169
(8x +13)(8x −13)
(8x +13)(8x −13)
h) 49x2 −169
(7x +13)(7x −13)
(7x +13)(7x −13)
i) 64x2 −169
(8x +13)(8x −13)
(8x +13)(8x −13)
j) 9x2 −64
(3x +8)(3x −8)
(3x +8)(3x −8)