Practice
Factor using Difference of Two Squares.a) 81x2 −196
(9x +14)(9x −14)
(9x +14)(9x −14)
b) 49x4 −25
(7x2 +5)(7x2 −5)
(7x2 +5)(7x2 −5)
c) 9x8 −196
(3x4 +14)(3x4 −14)
(3x4 +14)(3x4 −14)
d) 4x4 −25
(2x2 +5)(2x2 −5)
(2x2 +5)(2x2 −5)
e) 81x2 −169
(9x +13)(9x −13)
(9x +13)(9x −13)
f) 25x2 −36
(5x +6)(5x −6)
(5x +6)(5x −6)
g) 4x2 −121
(2x +11)(2x −11)
(2x +11)(2x −11)
h) 4x4 −225
(2x2 +15)(2x2 −15)
(2x2 +15)(2x2 −15)
i) 49x8 −144
(7x4 +12)(7x4 −12)
(7x4 +12)(7x4 −12)
j) 16x8 −25
(4x4 +5)(4x4 −5)
(4x4 +5)(4x4 −5)