Practice
Factor using Difference of Two Squares.a) 25x2 −49
(5x +7)(5x −7)
(5x +7)(5x −7)
b) 9x4 −196
(3x2 +14)(3x2 −14)
(3x2 +14)(3x2 −14)
c) 25x4 −4
(5x2 +2)(5x2 −2)
(5x2 +2)(5x2 −2)
d) 9x2 −16
(3x +4)(3x −4)
(3x +4)(3x −4)
e) 49x2 −4
(7x +2)(7x −2)
(7x +2)(7x −2)
f) 81x2 −16
(9x +4)(9x −4)
(9x +4)(9x −4)
g) 25x2 −36
(5x +6)(5x −6)
(5x +6)(5x −6)
h) 25x8 −36
(5x4 +6)(5x4 −6)
(5x4 +6)(5x4 −6)
i) 25x2 −36
(5x +6)(5x −6)
(5x +6)(5x −6)
j) 16x2 −169
(4x +13)(4x −13)
(4x +13)(4x −13)