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