Practice
Factor using Difference of Two Squares.a) 9x2 −16
(3x +4)(3x −4)
(3x +4)(3x −4)
b) 25x2 −16
(5x +4)(5x −4)
(5x +4)(5x −4)
c) 9x4 −196
(3x2 +14)(3x2 −14)
(3x2 +14)(3x2 −14)
d) 64x2 −169
(8x +13)(8x −13)
(8x +13)(8x −13)
e) 4x2 −225
(2x +15)(2x −15)
(2x +15)(2x −15)
f) 81x2 −4
(9x +2)(9x −2)
(9x +2)(9x −2)
g) 81x8 −121
(9x4 +11)(9x4 −11)
(9x4 +11)(9x4 −11)
h) 49x2 −121
(7x +11)(7x −11)
(7x +11)(7x −11)
i) 25x2 −16
(5x +4)(5x −4)
(5x +4)(5x −4)
j) 4x2 −169
(2x +13)(2x −13)
(2x +13)(2x −13)